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Digital Ebook
A
RESOURCE
ON
ELECTRIC
LINEAR
ACTUATORS
What a machine designer needs to know
http://tolomatic.com
Contents
2
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Table of
Contents
I. WHY ELECTRIC ACTUATORS? EVALUATING
THE BASICS
a. What is a linear actuator?
b. Electric linear actuator advantages
II. ACCURACY AND REPEATABILITY: CRITICAL
CONCEPTS
III. SELECTING THE RIGHT ACTUATOR: ROD OR
RODLESS
a. Rod actuators
b. Rodless electromechanical actuators
c. Screw selection
d. Consider the environment
e. Comparing manufacturers’ specs
f. Calculating actuator life
IV. MOTOR SELECTION: STEPPER OR SERVO?
a. Stepper motors
b. Servo motors
c. Motor mounting
V. SYSTEM INSTALLATION: CONSIDERATIONS
a. Optimizing actuator alignment
b. Minimizing electrical noise
VI. ELECTRIC ACTUATOR APPLICATIONS:
IMPROVED EFFICIENCY
a. Automotive manufacturing
b. Process industries
c. Food and beverage processing
d. Material handling
VII. CONCLUSION: TOTAL COST OF OWNERSHIP
CONTRIBUTOR CREDITS
There were many talented Tolomatic
contributors responsible for the contents of this
ebook. Thank you to:
GARY ROSENGREN, director of engineering;
IGOR GLIKIN, senior mechanical engineer;
PATRICK HOBART, senior software
development engineer;
SCOTT KLAR, electrical engineer;
AARON DIETRICH, director of marketing;
RYAN KLEMETSON, target markets manager;
DAN CASS, director of business development;
RYAN BOURGOINE, engineering supervisor;
and all the support staff that helped produce
the materials contained in this e-book. We hope
you find the contents informative.
P.3
P.4
P.5
P.11
P.13
P.14
P.16
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Why electric actuators? Evaluating the basics
COURTESY OF TOLOMATIC
I.
3
WHAT IS A LINEAR ACTUATOR?
A linear actuator is defined as a device that creates motion in a
straight line. These devices are used in automotive
manufacturing,
process industries, food and beverage processing, material
handling,
robotics, and in other places where linear motion is required.
Industrial applications use pneumatic-, hydraulic- and electric-
powered linear actuators. Pneumatic and hydraulic power
produce linear motion naturally so pneumatic and hydraulic
linear actuators (often called cylinders) can be fairly simple
devices. However, in electric-powered linear actuators an
electric
motor’s rotary motion must be converted to linear motion
through a screw/nut system or a belt. This means electric linear
actuators are somewhat more complex devices than pneumatic
or hydraulic actuators but can offer significant advantages in
many applications.
ELECTRIC LINEAR ACTUATOR ADVANTAGES
The decision of whether to use an electric, pneumatic
or hydraulic linear actuator is a crucial one for engineers
when specifying a linear actuator. A pneumatic cylinder has
advantages — ease-of-use, lower cost — but carries with it
inefficiencies in operation with potential compressed air
leaks. A hydraulic cylinder can provide high-thrust
capabilities in a variety of environments, but
they can be prone to fluid leaks which are not
environmentally friendly.
An electric linear actuator can offer distinct benefits:
• Able to handle complex motion profiles — Motion
control systems have become more complicated. Electric
linear actuators can provide precise control of speed,
acceleration, deceleration and force, outperforming fluid
power technologies. They offer accuracy/repeatability, infinite
positioning capabilities with data feedback and are able to
handle complex motion profiles.
• Able to adapt to changing needs — An electric actuator's
programming can be changed. If parameters change, the
actuator can be adjusted to meet new specifications with
minimal downtime and loss of productivity.
• Lower lifetime cost with highest efficiency and lowest
energy use — Electric-powered systems operate at 70-80%
total system efficiency, compared to 40-55% for hydraulic and
10-15% for pneumatic systems. In fact, savings over the total
life
cycle cost of the actuator—including the savings in efficiency,
energy use and reduced maintenance—can far outweigh the
initial acquisition cost.
• Readily integrate into other electric production systems —
Electric actuators are easily integrated into motion control
systems with the use of PLCs, HMIs and other devices to offer
enhanced motion control, data collection and diagnostics.
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
1 Why electric actuators? Evaluating the basics
BLOG
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about actuators and
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Accuracy and repeatability: Critical concepts
COURTESY OF TOLOMATIC
II.
4
When discussing a linear motion application, many users
ask “How accurate is this actuator?” The answer is more
involved than simply stating a number.
Accuracy and repeatability are related but not the same.
Accuracy refers to the ability of an actuator to achieve a
commanded position. Repeatability refers to the ability of
the actuator to achieve a position time after time.
The relative importance of the two qualities depends on
a thorough understanding of your application. Positional
errors can come from several sources: the actuator itself,
the motor and its encoder, and the motor driver. Also,
the way an actuator is deployed has significant influence
on the results.
There are numerous actuator styles/types manufactured
to various degrees of precision and subsequent cost.
There are also models that have high repeatability
without high accuracy. In the right application these less
accurate and lower-priced models can deliver excellent
performance.
The key to success is understanding what is
required in your application and choosing
the actuator accordingly. By doing so,
you can avoid excess costs and design a
system with the best overall value.
WHITE PAPER
DOWNLOAD:
Download our whitepaper,
Introduction to accuracy
and repeatability in linear
motion systems, for a
thorough explanation.
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
2 Accuracy and repeatabiity: Critical concepts
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https://www.tolomatic.com/info-center/resource-
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https://www.tolomatic.com/info-center/resource-
details/accuracy-repeatability-linear-motion-systems
III.
5
Selecting the right actuator: Rod or rodless
COURTESY OF TOLOMATIC
When you need to specify an electric linear actuator,
begin by answering these simple questions:
• What needs to be moved?
• How far and fast does it have to move?
• How much does the load weigh?
• How much space is available for the system?
• What are the force requirements?
The answers will make actuator selection easier
and lead you to the initial decision of whether
to specify an electric rod actuator or a rodless
electromechanical actuator.
The pushing action of an electric rod actuator
works well in many applications. However, this type
of actuator may not be suitable if the item is heavy
and must be supported or if the distance traveled
is long. Rod-style actuators do not provide support
to a load. The weight of the load can deflect the
rod, causing wear on seals and bearings and even
triggering major positioning problems.
Rodless actuators guide and support the load
throughout the stroke length. They also have a
size advantage because their entire stroke length
is contained in their body rather than having a rod
that extends out from the body. However, these
actuators may not stand up to harsh environments
without shielding.
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
3 Selecting the right actuator: Rod or rodless
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Selecting the right actuator: Rod or rodless
(CONTINUED)
ROD ACTUATORS
6
SELECTION TIPS
Factory automation applications are requiring faster speeds and
greater precision, so machine designers are changing to electric
linear actuators. Electric rod actuators can deliver speed,
control and
precision but may come with a higher initial cost and a more
complex
design than fluid power cylinders (either pneumatic or
hydraulic).
Given the growing demand for cost control, engineering and
analysis
at the front end of an application can reduce overall costs and
result
in automation systems with higher reliability, better
performance,
lower energy expenditures and less maintenance.
WHITE PAPER
DOWNLOAD:
Download our white paper,
Top ten tips: How to specify
electric rod-style actuators
for optimal performance,
reliability and efficiency,
for the full explanation.
TRADITIONAL AND INTEGRATED ELECTRIC LINEAR
ACTUATORS
A trend in electric linear motion is to integrate the control,
drive,
motor and other components with the actuator. This has created
a
new category: integrated actuators.
Pneumatic cylinders have been used widely because they are
inexpensive to buy and simple to apply. Electric rod-style
actuators
are gaining popularity due to their flexibility and energy
efficiency.
However, electric rod actuators have been perceived as a more
expensive and complex solution.
An integrated electric actuator offers advantages over both
pneumatic and traditional electric actuator solutions. Compared
to
a pneumatic cylinder an integrated electric actuator will save
energy.
Compared to a traditional electric actuator an integrated
solution
will save purchase, installation, and assembly costs, while
reducing
the overall footprint of the machine.
VIEW OUR WEBINAR
Learn about electric rod actuator selection at our webinar.
INFOGRAPHIC
10 tips for
specifying electric
rod actuators
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
3 Selecting the right actuator: Rod or rodless
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7
SELECTION TIPS
Rodless electro-mechanical actuators have an
advantage over electric rod actuators, as many
have the ability to support and carry loads.
This can reduce costs and design time
by eliminating the need for other load-
bearing and guiding elements. In contrast
to rod-style actuators, a rodless actuator’s
stroke lies completely within the length
of its body, resulting in a smaller working
footprint. In addition, rodless actuators can
be either screw- or belt-driven, with each drive
type having its own advantages depending on the
application.
VIEW OUR WEBINAR
Learn about rodless electromechanical actuator
selection at our webinar
RODLESS ELECTROMECHANICAL ACTUATORS
WHITE PAPER
DOWNLOAD:
Download our white paper,
Specifying electric rodless
actuators: Ten tips for
maximizing actuator life
and system performance,
for the full explanation.
WHITE PAPER
DOWNLOAD:
To learn more about drive
train selection, download our
white paper, Screw-driven vs.
belt-driven rodless actuators:
How to select drive trains for
reliability, efficiency and long
service life.
Selecting the right actuator: Rod or rodless
(CONTINUED)
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
3 Selecting the right actuator: Rod or rodless
BELT DRIVE OR SCREW DRIVE?
Rodless electromechanical actuators commonly use
one of two main drive train types to convert a motor’s
rotary motion to linear motion: a power screw drive or a
timing belt drive. While both offer efficiency, reliability and
long life,
each has its limitations.
Power screw drives and timing belts carry a dual function. They
are used
for linear positioning, and they transmit power. A screw
mechanism
produces linear motion by rotating either the screw or the nut in
an
assembly. Similarly, timing belt drives transmit torque and
linear motion
from a driving pulley via the belt, which in turn moves the
actuator's carriage.
The specifics of a motion control application determine which
drive
train to select. Key factors in drive train selection are length of
stroke,
linear velocity and acceleration, as well as orientation of the
move.
Drive trains vary in capacity, so the thrust of the actuator as
well as load
and force of the actuator carrier will affect drive train choice.
INFOGRAPHIC
10 tips for
specifying rodless
electric linear
actuators
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Selecting the right actuator: Rod or rodless
(CONTINUED)
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
3 Selecting the right actuator: Rod or rodless
GUIDE DOWNLOAD:
Learn about terminology and
the uses of each type of lead
screw design in our guide,
Which screw? Picking the
right technology. Click here
to download.
SCREW SELECTION
When it comes to specifying an electric linear actuator it is
critical to select
the right lead screw for the application because the screw is the
major
drive component in most electric actuators.
There are three primary types of screws used in linear actuators:
acme, ball
and roller. The differences among these screw types are in the
design of the
thread shape along with the design and operation of a matching
nut.
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CONSIDER THE ENVIRONMENT
The IP rating system standardizes ingress protection levels for
enclosures and machine components like linear actuators.
Electric
actuators are used in manufacturing applications that can expose
them to dust, liquids and chemical solutions. Generally, rod-
style
models are better suited to harsh conditions. Unshielded rodless
actuators can be employed if conditions require a rating of IP54
or lower. For higher levels of ingress protection, rodless
actuators
often require external shields or enclosures.
When selecting linear actuators for applications that require
dust and
liquid ingress protection, consider the types of dust and liquids
to
which the actuators will be exposed. This will ensure
environmental
compatibility, optimal performance and long service life.
WHITE PAPER
DOWNLOAD:
Learn more about the IP rating
system and how it relates
to linear actuator selection.
Download our white paper, IP
ratings and the manufacturing
environment: How to apply
linear actuators for quality,
safety and long service life.
COMPARING MANUFACTURERS’ SPECS
When it comes to electric linear actuator selection, a
product that has the highest output rating—in loads,
moments, or thrust—can have a distinct competitive
advantage. Often the product that has the highest
rating is seen to be the superior, most robust
choice. However, what really counts is how long
the actuator performs (that is, its useful life).
How can you use manufacturers’ published
specification ratings to make a meaningful
comparison? In order to compare components,
the specification values need to be normalized
to the rated life of travel the actuator is capable of
when external forces are applied. Then the resulting
data can be evaluated in the same units of measure.
WHITE PAPER
DOWNLOAD:
Our whitepaper, Select the
right linear actuator: making
sense of manufacturer
specifications, explains
how to normalize specs.
Download it here.
Selecting the right actuator: Rod or rodless
(CONTINUED)
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
3 Selecting the right actuator: Rod or rodless
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Selecting the right actuator: Rod or rodless
(CONTINUED)
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
3 Selecting the right actuator: Rod or rodless
CALCULATING ACTUATOR LIFE
Determining the useful life of machines and their
components is a fundamental challenge in any motion system
design project. The useful life (or service life) of a
machine or component like a linear actuator
is the period during which it continues to
operate and satisfy its required function.
The useful life of any actuator depends on
the life of the components that perform
most of the mechanical work or carry
the most load. Lead screw drives are an
example of such a critical component.
The life of a lead screw can be defined as the
actual life achieved by a screw before it fails for
any reason. Among possible reasons for failure
are: fatigue, excessive wear, corrosion, contamination,
insufficient structural strength, or loss of any function required
by
the application.
WHITE PAPER
DOWNLOAD:
What is DLR, L10 and
Equivalent Load?
How do they affect actuator
life? Download our guide: How
to estimate life in ball and
roller screw-driven actuators.
WHITE PAPER
DOWNLOAD:
Download our white
paper, The truth about
actuator life: screw
drive survival, for
examples of load-life
conversion calculations.
SIZE IT RIGHT!
Wish specifying electrical
linear actuators was easier?
Our electric actuator sizing
software could be just what
you need. It’s technology that’ll
save time and hassle when
selecting actuators.
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Motor selection: Stepper or servo?
COURTESY OF TOLOMATIC
IV.
11
Electric linear actuators rely on motors to generate torque.
Selecting
the appropriate motor type is a major consideration when
specifying
an electric linear actuator. The decision must take into account
the
application’s parameters. Two common motor options for
electric
actuators are stepper motors and servo motors. A machine
designer
needs to understand the advantages and disadvantages of both
types
in order to specify the best motor for an application
SERVO MOTORS
A brushless servo motor has three wiring phases in the stator.
The rotor has
several pairs of permanent magnets aligned with alternating
poles. When
the phase windings are energized, torque is generated between
the phase’s
electromagnet poles and the rotor’s magnetic poles causing the
rotor
to rotate. A servo motor is paired with some type of encoder to
provide
position and speed feedback. Servo actuators perform well in
high speed
and force-sensitive applications. They are closed loop devices
and require
the feedback of sensors plus additional cabling to connect to
controllers.
SERVO MOTOR ADVANTAGES
• Higher degree of control over position and speed.
• Higher degree of accuracy due to closed
loop control.
• Maintain torque throughout speed range; can
output brief periods of “peak torque.”
SERVO MOTOR DISADVANTAGES
• More complex and may cost more.
• Control loops may require tuning which adds complexity.
STEPPER MOTORS
A stepper motor is a brushless DC motor that divides a full
rotation into
equal steps. The rotor has magnetic teeth that align to the
electromagnetic
poles in the stator. The motor’s position is known by the
number of steps
commanded. The motor's shaft can be commanded to move and
hold at
a step without any feedback sensor. Electric actuators with
stepper motors
offer excellent performance and lower cost for low speed, high
torque and
high repeatability applications with open-loop control.
STEPPER MOTOR ADVANTAGES
• Open loop position control. No feedback
information needed.
• Lower cost.
• High torque at low speeds.
• Dentent torque (the torque required to turn the
motor when no current is applied to the windings)
is much higher in stepper motors and is beneficial
in preventing the weight of the load back-driving
the motor when the system is powered down.
• Excellent repeatability. Accuracy within 3-5%.
STEPPER MOTOR DISADVANTAGES
• Insufficient torque can lower accuracy. Motor may be
oversized (up to
50% above maximum torque requirement), leading to higher
cost.
• Motor resonance is common resulting in torque loss and noise.
WHITE PAPER
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paper, Choosing
stepper- or servo-
driven actuators to
replace air cylinders, for
a thorough explanation.
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
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Motor selection : Stepper or servo?
(CONTINUED)
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
4 Motor Selection: Stepper or servo?
12
MOTOR MOUNTING
Attaching a motor to an electric linear actuator requires an
adaptor or
housing. The mounting hardware needed varies based on motor
type and
brand as well as on how the motor is to be mounted — either
inline or
reverse parallel.
An inline configuration directly couples the motor’s driving
shaft to the
actuator through a housing. This configuration provides
excellent motor
support and allows maximum power transmission from the
motor to the
actuator. The downside, though, is that this type of
configuration takes
up horizontal space (length of motor + length of actuator).
A reverse parallel configuration is a space-saving alternative
(on the
horizontal plane); however, some of the motor’s power will be
lost
due to the gear or belt drive required. This loss may reduce
some of
the actuator’s force.
The needs of your application will help you decide on the
appropriate configuration.
GET THE RIGHT FIT
WITH OUR YOUR
MOTOR HERE® PROGRAM
Selecting and assembling the
components of an electric actuator
system adds to your workload as a
busy engineer. We developed the
Your Motor Here® program to make
it quicker and easier to match motor
to actuator and get the right motor
mounting hardware.
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System installation: Considerations
COURTESY OF TOLOMATIC
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
5 System installations: Considerations
V.
13
OPTIMIZING ACTUATOR ALIGNMENT
Many industrial machines rely on linear guidance components,
often
driven by some type of linear actuator, to guide and support
moving
elements. Guidance components include profiled rail, round rail
or other rolling or sliding bearing structures. However,
guidance
components can affect system performance and actuator life by
introducing challenges such as:
• Inconsistent results
• Shorter-than-expected useful life
• Premature wear or failure of actuator components
• Erratic motion, such as speed variations or wobbling
When you are installing a linear motion system that includes
guidance
components, be sure actuator compliance mechanisms are in
place
to compensate for stress points. Also, you will need to address
both
parallelism in the system and perpendicular alignment bending
moment
issues. Careful consideration of these elements will give you
optimal
performance of the actuator and guidance system.
WHITE PAPER
DOWNLOAD:
Our white paper, Rules of
actuator and guide alignment
in linear motion systems,
provides an explanation of
these installation issues.
Download it here.
MINIMIZING ELECTRICAL NOISE
Electric drives and actuators operate in harsh conditions that
subject
equipment to electrical noise—a random fluctuation in an
electrical signal
that is present in all electronic circuits. Electrical noise can
disrupt actuator
control signals, cause erratic movements or precipitate complete
system
failure. By understanding electrical noise, system designers can
take steps
to minimize interference and ensure greater reliability.
A designer needs to consider two types of electrical noise:
ground
loop and induced noise. Both can be mitigated with appropriate
installation, cable separation and shielding. Communications
issues
can be mitigated by minimizing noise and employing
appropriate
daisy chaining.
To avoid difficulties, we suggest considering issues with
electrical noise
and communication integrity early in the system design and
installation
process. Because electrical noise cannot be eliminated
completely
and a communication system can never be completely fail-
proof, the
primary objectives during system design/installation are to
mitigate
the risks associated with electrical interference and make
informed
financial decisions based on the operating environment and
costs
associated with potential system failure.
WHITEPAPER
DOWNLOAD:
Our white paper,
Minimizing electrical noise
in actuator drive systems
for maximum reliability and
performance, discusses the
causes of electrical noise, its
effects on communication and
how to minimize it. Download
the paper here.
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Electric actuator applications: Improved efficiency
COURTESY OF TOLOMATIC
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
6 Electric actuator applications: Improved efficiency
VI.
14
AUTOMOTIVE MANUFACTURING
As the global automotive industry continues to grow, demand
for
automated production is also expanding to control quality and
production costs. As part of this move toward increased
automation,
many automotive manufacturers employ servo-controlled
resistance
spot welding equipment within their body-in-white production
lines.
However, automobile manufacturers producing vehicles for
markets
including China, Brazil, Korea and India may still use
traditional
pneumatic spot welding equipment. As vehicle production in
these
markets ramps up and consumers demand higher quality, these
manufacturers are considering a transition to robot-carried,
servo-
controlled spot welding equipment. Servo-actuated resistance
spot
welding guns provide better welds, require less maintenance,
and offer
lower operating costs, increased life and better return-on-
investment
(ROI) than their pneumatic counterparts.
PROCESS INDUSTRIES
Valves are critical components in processing plants because
they
control the flow of raw materials and finished goods. Some
valve
automation applications, especially control valves, require
increasingly
sophisticated motion control solutions. To meet these demands,
engineers can use an emerging technology in valve
actuation: brushless servo valve actuators.
Control valves operate in two ways: linear
motion (rising stem) or rotary motion
(half turn or quarter turn). Each method
is designed for specific functions and
applications. Rising stem valves are
typically used in mission critical areas
of a process where reliability,
repeatability, accuracy and
responsiveness are all desired.
Brushless servo motion control
can provide performance
improvements beyond
traditional actuation methods.
Electric linear valve actuators (both brush and
brushless servo motor types) provide excellent control in valve
applications. Electric actuator technology has evolved, bringing
costs
down, reducing the number of components, making set-up user
friendly,
and dramatically improving overall system efficiencies when
compared to
pneumatic and hydraulic systems.
WHITE PAPER
DOWNLOAD:
For the full story
download our white
paper, How to select the
best linear actuator type
for valve automation in
process industries.
WHITE PAPER
DOWNLOAD:
For more information on the
advantages of electric servo
actuators over pneumatic
actuators, download our white
paper, Servo spot welding
offers superior performance
and lower lifetime costs for
auto manufacturing.
http://tolomatic.com
http://www.tolomatic.com/Info-Center/Resource-
Details/resource-
details/779?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=ElectricServoWeldingSlideshow&utm_campaign=D
webook
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details/455?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=ValveAutomationWP&utm_campaign=Dwebook
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m_content=ServoSpotWeldingWP&utm_campaign=Dwebook
Electric actuator applications: Improved efficiency
(CONTINUED)
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
6 Electric actuator applications: Improved efficiency
15
FOOD AND BEVERAGE PROCESSING
Production of food and beverages on today’s industrial scale
would not
be possible without a high level of automation. Pneumatic,
hydraulic
and electric actuators are critical moving components in food
and
beverage processing and packaging equipment.
In addition to being
efficient, machines used to
process food must keep
food safe by not harboring
or introducing bacteria,
lubricating fluids or other
contaminants that could
harm consumers. As part
of food and beverage
production machines,
electric actuators must
be manufactured from
materials that resist
corrosion while not
leaching toxic substances
into food products or
packaging. Also, actuators
need to be designed
in a way that eliminates
collection points where
bacteria can flourish. Suitable actuators must be capable of
withstanding frequent washdowns with water, detergents, steam,
caustic soda, citric acid or other types of sanitary cleaning
solutions.
MATERIAL HANDLING
Material handling systems keep manufacturing processes
moving.
They bring raw materials to machines, take workpieces
to new processes, and package, palletize and prepare
finished goods for shipping. Every plant has some type
of material handling need, and most plants have a
range of systems, each with its own specifications.
This means material handling encompasses an
extremely wide variety of applications.
Conveying equipment gets this material handling work done,
often with
the accurate and reliable functioning of linear actuators. When
specifying
linear actuators for material handling, consider the application’s
specific
needs for positioning accuracy, energy efficiency and cost of
ownership.
If a facility produces several products, then actuators that are
easily
programmable to several positioning set-ups may be needed.
Also, it is
important to consider the manufacturing environment, both the
presence
of harmful moisture and dust and the use of harsh chemicals
like those
employed to wash down food processing equipment. Actuators
must be
able to withstand these conditions.
For stories of how we have worked with material handling
equipment manufacturers to solve their challenges,
download these case studies:
• Tolomatic ERD electric actuators help global conveyor
manufacturer Intralox make all the right moves
• Hytrol puts the skinny on bulky conveyor diverters with
space-saving rodless cylinder from Tolomatic
WHITE PAPER
DOWNLOAD:
Our white paper,
Evaluating actuators for
washdown in food &
beverage applications,
discusses these issues
fully. Download it here.
http://tolomatic.com
http://www.tolomatic.com/Info-Center/Resource-
Details/resource-
details/439?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=IntraloxCaseStudy&utm_campaign=Dwebook
http://www.tolomatic.com/Info-Center/Resource-
Details/resource-
details/439?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=IntraloxCaseStudy&utm_campaign=Dwebook
http://www.tolomatic.com/Info-Center/Resource-
Details/resource-
details/434?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=HytrolCaseStudy&utm_campaign=Dwebook
http://www.tolomatic.com/Info-Center/Resource-
Details/resource-
details/434?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=HytrolCaseStudy&utm_campaign=Dwebook
http://blog.tolomatic.com/
Conclusion: Total cost of ownership
COURTESY OF TOLOMATIC
A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter
7 Conclusion: Total cost of ownership
VII.
16
ELECTRIC VS. PNEUMATIC AND HYDRAULIC
LINEAR ACTUATORS
In the final analysis cost is a major factor in the acquisition of
any piece
of automation equipment, but cost can be considered in
different
ways. Evaluating the cost of automation has evolved from an
overly
simplistic process to a more realistic one.
Purchase price often has been the only cost factor considered
when
buying an automation device. That practice is giving way,
though, to a
thorough analysis of the device’s “total cost of ownership”
(TCO). The
TCO concept combines purchase price with the cost of
operating the
device over its projected service life.
When it comes to linear actuators, pneumatic actuators (air
cylinders) are
known for their low initial cost and durability. They have been
a staple in
factory automation equipment for decades because they are
simple, easy
to maintain and provide reasonable control over linear motion.
Hydraulic
actuators are known for their high force output and can be used
where
pneumatic power is not possible, but their characteristic of
leaking fluid
is becoming a concern in today's fragile outdoor environments.
Since the
development of more flexible, precise and reliable electric
actuators with
increased force capacities and greener, more efficient operation,
there has
been a debate over which technology offers the best overall
solution for
industrial plant optimization.
The case for switching to electric actuators has focused on the
ability
of electric actuators to achieve more precise control of motion
(in
terms of position, speed, acceleration and force), along with
providing
superior accuracy and repeatability. That superior performance,
though, comes with a higher initial price.
While it’s true that electric actuators have a higher initial cost,
this is not the
complete story. There are factors that can make an electric
actuator a more
economical option than an air or hydraulic cylinder over the life
of a device
or machine. These include efficiency, electric utility costs, air
and hydraulic
fluid leaks, maintenance, actuator replacement, product quality,
changeover
time, cycle times and contamination risks. These factors
combined with
purchase price determine the total cost of ownership for an
actuator.
Considering TCO early in the process of specifying linear
actuators
means a machine designer will analyze the entire service life of
a
choice with related costs, as well as the initial purchase price.
This
analysis will show that in many cases choosing an electric
actuator over
a pneumatic or hydraulic device will provide a lower TCO,
making the
electric actuator the better choice.
WHITE PAPER
DOWNLOAD:
Electric rod actuators
vs. hydraulic cylinders:
A comparsion of the
pros and cons of each
technology.
WHITE PAPER
DOWNLOAD:
Electric actuators vs.
pneumatic cylinders:
A comparison based
on total cost of
ownership
DOWNLOAD
INFOGRAPHIC:
For more information
on Calculating
total cost of linear
actuators.
http://tolomatic.com
http://www.tolomatic.com/Info-Center/Resource-
Details/resource-
details/780?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=ElectricvsCylindersWP&utm_campaign=Dwebook
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Details/resource-
details/443?utm_source=DesignWorld&utm_medium=Ebook&ut
m_content=ElectricvsPneumaticWP&utm_campaign=Dwebook
https://www.tolomatic.com/info-center/resource-
details/infographic-calculating-total-cost-of-ownership
17
Contact Us
United States Headquarters
3800 County Road 116
Hamel, MN 55340, USA
Local Phone: 763.478.8000
Toll Free: 1.800.328.2174
Fax: 763.478.8080
www.tolomatic.com
[email protected]
European Office
Tolomatic Europe GmbH
Elisabethenstr. 20
65428 Rüsselsheim
Germany
Phone: +49 6142 17604-0
[email protected]
China Facility
Tolomatic Automation Products
(Suzhou) Co. Ltd.
(ServoWeld® inquiries only)
No. 60 Chuangye Street, Building 2
Huqui District, SND Suzhou
Jiangsu 215011--P.R., China
Phone: +86 512 6750 8506
Fax: +86 512 6750 8507
[email protected]
9900-9237_01
http://tolomatic.com
http://tolomatic.com
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mailto:help%40tolomatic.com?subject=
mailto:servoweldchina%40tolomatic.com?subject=
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12: Page 13: Page 14: Page 15: Page 16: Button 17: Button 18:
Button 19: Button 16: Button 13: Page 17: Button 12: Page 17:
Glide Screw™
Combines the Features of a Linear Bearing and Screw in One
Compact Package
www.thomsonlinear.com
2 www.thomsonlinear.com/glidescrew
Introduction
What is a Glide Screw™? Part linear bearing, part lead screw; a
combination of two
favorites to create something better than both. The patent-
pending Glide Screw
brings high performance, fast installation and less complexity in
a small package.
Standard Sizes and Configurations Stocked for Immediate
Availability
• Metric Series includes 4, 6 and 10 mm nominal diameters
• Inch Series includes 3/16”, 1/4” and 3/8” nominal diameters
• Flanged and cylindrical nut bodies standard
Optional Configurations for Harsh Environments Available
• High temperature resistant – inside ovens or autoclaves (up to
175 °C)
• Clean room – in robot vacuum chambers, laboratories or
medical equipment (ISO 6)
• Food grade – in packaging and food processing equipment
Custom Nut Configurations, Screw Diameters and Thread Leads
Available
• Don’t see your perfect configuration – call us, we make
custom sizes
Easy to Install and Maintenance Free!
• All that is required is a Glide Screw and an anti-rotation
feature
• No need for reference surfaces or the pain of “floating” your
system into alignment
• Plug and play – install it and forget it
• Integrated Thomson’s patented Lube for Life technology
• Bearing grade plastic and stainless steel construction
standard
3
Glide Screw
www.thomsonlinear.com/glidescrew
Benefits of the Glide Screw Technology
The Glide Screw combines the features of a linear bearing and a
lead screw in one
smooth operating package. Inch and metric sizes are standard.
Custom sizes are also
available quickly and to your specification.
Reduced Footprint
• Integrated lead screw / linear bearing
• Side load / moment load capable
Improved Equipment Uptime
• Screw and linear bearing are already aligned
• Component alignment is not critical – smooth and quiet
motion
• Integrated lubrication block – Thomson Lube for Life
standard
Lower Cost of Ownership
• Less complexity – faster installation
• Less components – simpler bill of material
• Maintenance free – no lubrication required
Glide Nut Housing
Lubrication Block
Radial Bearing
Glide Screw
4 www.thomsonlinear.com/glidescrew
Typical Application
Every engineer’s objective is to eliminate parts, streamline the
design, simplify
installation and reduce the maintenance required – exactly what
a Glide Screw™ does.
3D Printing or Engraving
Innovative and portable multi-axis printers / engravers are
revolutionizing rapid prototyping and consumer
products. The Glide Screw can reduce the number of
components, decrease system complexity, decrease
assembly time and produce a better machine as decribed in the
table below. It requires no maintenance, can
shorten overall guided length and has a longer life which makes
our Thomson Glide Screw the better design
solution and less expensive overall.
Generic design
Glide Screw design
Generic vs. Glide Srew Design
Generic Glide Screw
X, Y Area Compactness 4100 mm2 1600 mm2
Z Axis Length 64 mm 46 mm
Approx. Installation Time 45 min 15 min
Number of Parts 74 30
Self Aligning No Yes
Maintenance Free No Yes
5
Glide Screw
www.thomsonlinear.com/glidescrew
Other Application Ideas
Fluid Pumps
Syringe pumps and integrated fluid pumps are a growing
segment of the medical
industry. The stringent demands of these customers require
smaller, cleaner,
smoother, and quieter products. This is exactly the challenge the
Glide Screw
was designed to solve.
Fluid Pipetting / 3-Axis Lab Automation
Lab automation and diagnostics require faster and more accurate
systems
in smaller footprints. Optimized for z-axis applications
requiring the smallest
footprint, the Glide Screw can replace traditional linear guided
products that are
overdesigned and more expensive.
Generic design
Glide Screw design
Other Applications
The Glide Screw
improves performance
in a smaller and lighter
package. It is easier
and faster to install.
Also, it requires less
maintenance compared
to traditional lead
screw and linear guide
solutions. Other great
applications for the
Glide Screw include:
• Test tube handling
• Lab automation
• CD duplication
• Pick & place
• Syringe pumps
• In vitro diagnostics
• Medical imaging
6 www.thomsonlinear.com/glidescrew
Engineering
The Glide ScrewTM is designed to actuate a moment load or a
side load without
additional linear guidance or support. Therefore, the screw
deflection is the
determinant feature and the following charts must be used when
properly sizing a
Glide Screw for an application.
How the Glide Screw Works
The unique design of Glide Screw allows it to handle
axial, radial and moment loads without additional
guidance. The result is an efficient and space
saving design that is quick and easy to install with
reduced maintenance needs compared to traditional
solutions.
End Support
Decide which type of end support you will use to
enable accurate selection of diameter.
Fixed support – utilizes a support journal length at
least 1.5 × the journal diameter – such as dual ball
bearings.
Simple support – uses a single ball bearing, a plain
bearing, or a bushing.
End support configurations shown at left:
1. Simple / simple
2. Fixed / simple
3. Fixed / fixed
Max. Length
Max. Length
Max. Length
1.
2.
3.
= load lines
= reactionary forces
axial
load
axial
load
radial
load
moment
load
7
Glide Screw
www.thomsonlinear.com/glidescrew
0 2 4 6 8 10 12 14 16 18 20
0
20
40
60
80
100
120
140
160
180
0
25
50
75
100
125
150
175
200
250
0 2 4 6 8 10 12 14 16 18 20
225
0 50 100 150 200 250 300 350 400 450 500
0
2
4
6
8
10
12
14
16
18
0 50 100 150 200 250 300 350 400 450 500
0
100
200
300
400
500
600
700
800
1000
900
Engineering
Moment Load and Radial Load Charts
Determine your end support configuration and then
use the following charts to properly size the nominal
diameter of the Glide Screw. Select a product
diameter that lies above and/or to the right of the
design moment or load.
The lead of a Glide Screw is defined as the axial
distance traveled for one revolution of the screw.
Select the appropriate lead of your screw based on
the desired speed and resolution of travel. Note that
the Glide Screw is limited to 300 RPM.
Inch Diameter Models
Unsupported length [in]
Screw diameters
= 0.375 inch = 10 mm
= 0.250 inch = 6 mm
= 0.188 inch = 4 mm
End support type
= fixed in both ends
= simple in one end and fixed in other
= simple in both ends
Conversion factors
1.0 in-lb = 0.113 Nm
1.0 lb = 4.448 N
M
om
en
t l
oa
d
[in
-lb
s]
Ra
di
al
lo
ad
[l
bs
]
M
om
en
t l
oa
d
[N
m
]
Ra
di
al
lo
ad
[N
]
Unsupported length [in]
Unsupported length [mm]Unsupported length [mm]
Metric Diameter Models
8 www.thomsonlinear.com/glidescrew
Specifications and Part Numbers
Glide Screw™ configurations
GSF - screw and flanged nut assembly GSC - screw and
cylindrical nut assembly
Inch Series Dimensions
Screw
Diam.
[in]
Screw
Lead
[in]
Screw and Nut
Assembly
Part No.
Max
Axial
Load
[lbs]
Max
Moment
Load
[in-lbs]
Max
Screw
Length
[in]
Dimensions [in] Effic.
[%]
A B C D E F G H J BCD
0.188
0.050 GS_18x0050
30.0 20.5 6.000 0.375 0.750 0.281 0.875 0.140 0.125 0.094
0.188 0.177 0.625
46
0.125 GS_18x0125 68
0.250
0.050 GS_25x0050
45.0 47.5 10.000 0.500 1.000 0.313 1.000 0.140 0.150 0.125
0.250 0.237 0.750
40
0.500 GS_25x0500 82
0.375
0.063 GS_37x0063
70.0 137.5 18.000 0.875 1.750 0.563 1.750 0.200 0.300 0.188
0.438 0.406 1.250
36
0.500 GS_37x0500 78
1.000 GS_37x1000 83
Metric Series Dimensions
Screw
Diam.
[mm]
Screw
Lead
[mm]
Screw and Nut
Assembly
Part No.
Max
Axial
Load
[N]
Max
Moment
Load
[Nm]
Max
Screw
Length
[mm]
Dimensions [mm] Effic.
[%]
A B C D E F G H J BCD
4
1 GS_4x1M
89.0 2.3 150 10 20 6.5 20 2.5 3 2 5 5 15
45
4 GS_4x4M 75
8 GS_4x8M 82
6
1 GS_6x1M
133.4 5.4 250 13 26 7.75 25 3.5 4 3 7 5.75 19
36
6 GS_6x6M 75
12 GS_6x12M 82
10
2 GS_10x2M
311.4 15.5 450 22 44 14 44 5 7 4 10 9.85 32
40
6 GS_10x6M 66
12 GS_10x12M 77
B
F
A h11
C
B
G H11
H
J
D
BCD
E
A h9
Part number example: GSC25x0500 = glide screw assembly,
cylindrical nut, 0.250 inch diameter by 0.500 inch lead
Standard Products
• Acetal nut body with all stainless steel internal components
• 303 stainless steel screw
• Integrated Lube for Life lubrication block
• Temperature Rating: -40° to 65°C (-40° to 150°F)
• Clean Room ISO 7 (Class 10000)
9
Glide Screw
www.thomsonlinear.com/glidescrew
End Machining
End support type
Recommended end machining
fixed / fixed fixed / simple simple / simple
Inch Series End Machining Dimensions
Screw
Diam.
[in]
Screw
Lead
[in]
Screw
Part No.
Root
Diameter
[in]
Recommended Bearing Dimensions [in]
OD
[mm]
ID
[mm]
W
[mm]
Bearing
Trade No.
A B C D E F G H L THD
0.188
0.050 GS18x0050 0.12
7 2,5 2,5 692X 0.197 0.098 N/A 0.098 N/A 0.022 0.120 0.075
0.157 N/A
0.125 GS18x0125 0.13
0.250
0.050 GS25x0050 0.19
13 4 5 624 0.295 0.118 0.610 0.157 0.374 0.020 0.217 0.150
0.256 M4×x0.5
0.500 GS25x0500 0.16
0.375
0.063 GS37x0063 0.30
19 6 6 626 0.394 0.197 0.728 0.236 0.453 0.030 0.266 0.220
0.315 M6×0.750.500 GS37x0500 0.27
1.000 GS37x1000 0.24
Metric Series End Machining Dimensions
Screw
Diam.
[mm]
Screw
Lead
[mm]
Screw
Part No.
Root
Diameter
[mm]
Recommended Bearing Dimensions [mm]
OD
[mm]
ID
[mm]
W
[mm]
Bearing
Trade No.
A B C D E F G H L THD
4
1 GS4x1M 2.8
7 2.5 2.5 692X 5.00 2.50 N/A 2.50 N/A 0.55 3.05 1.90 4.00
N/A4 GS4x4M 2.8
8 GS4x8M 2.8
6
1 GS6x1M 4.6
13 4 5 624 7.50 3.00 15.50 4.00 9.50 0.51 5.51 3.81 6.50
M4×x0.56 GS6x6M 4.4
12 GS6x12M 4.4
10
2 GS10x2M 7.3
13 6 6 626 10.00 5.00 18.50 6.00 11.50 0.76 6.76 5.59 8.00
M6×0.756 GS10x6M 8.4
12 GS10x12M 8.4
10 www.thomsonlinear.com/glidescrew
Installation
Comparing Alternative Technologies
The Glide Screw™ is both drive system and linear guide, so
these features are already perfectly aligned
and cannot bind. Therefore, installation is simple and the
mating components do not require high tolerance
geometric features.
Drive and Guide Technology Comparison
Feature Lead Screw / Linear Bearings Lead Screw / Profile Rail
Glide Screw
Small Footprint Good Better Best
Ease of Installation Better Good Best
Stiffness Better Best Good
Misalignment Tolerant Better Good Best
Lube for Life Lubrication Optional Optional Integrated
Total Cost of Ownership Good Better Best
11
Glide Screw
www.thomsonlinear.com/glidescrew
Installation
Basic Installation Guidlines
The success of the Glide Screw in an application is primarily
dependent on the end support configuration. Since
the Glide Screw is a combination of a lead screw and linear
bearing, the ability to handle non-axial loads while
maintaining positional accuracy is the key to a successful
installation. The load capacity curves are based on
screw deflection and not the lead nut capacity. Therefore,
stiffness of the assembly determines load capacity.
1
2
3
4
5
Installation Step-by-Step
1. Select end support configuration
A fixed bearing support should be selected when possible.
A simple support is typically a single radial bearing that
is allowed to float axially to compensate for misaligments.
Typical methods of attaching end supports is either base
mounting or flange mounting.
2. Select motor and drive configuration
Select a motor and your means for coupling the screw to
the motor. Typically this is done by a belt, gearing or an
in-line coupler. It is also possible to directly integrate
a Glide Screw with a stepper motor, which can reduce
complexity and save space.
3. Select nut mounting interface
The standard configurations for the glide nut are flanged
nuts and cylindrical nuts but are by no means the only
solutions. Custom configurations, custom mounting and
design assistance are available from Thomson.
4. Determine anti-rotation method
The Glide Screw requires an external anti-rotation
feature on the nut housing to function correctly. Two
examples of acceptable methods are the finger / slot
solution or the bushing / linear shaft solution.
5. Mount the assembly into the application
The actual mounting of the Glide Screw is easy once all of
the periphrials have been determined and designed. Just
bolt the assembly in place and fire up the system. No critical
alignment procedures are necessary as the drive system and
linear guidance are already in perfect alignment.
Glide_Screw_BREN-0002-04 | 20180412KB
Specifications are subject to change without notice. It is the
responsibility of the product user to determine the suitability of
this product for a specific application. All trademarks property
of their respective owners. ©2018 Thomson Industries, Inc.
www.thomsonlinear.com
USA, CANADA and MEXICO
Thomson
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Radford, VA 24141, USA
Phone: 1-540-633-3549
Fax: 1-540-633-0294
E-mail: [email protected]
Literature: literature.thomsonlinear.com
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United Kingdom
Thomson
Office 9, The Barns
Caddsdown Business Park
Bideford, Devon, EX39 3BT
Phone: +44 (0) 1271 334 500
E-mail: [email protected]
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72649 Wolfschlugen
Phone: +49 (0) 7022 504 0
Fax: +49 (0) 7022 504 405
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Fax: +33 (0) 243 50 03 39
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Fax: +39 0362 594263
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29109 Kristianstad
Phone: +46 (0) 44 24 67 00
Fax: +46 (0) 44 24 40 85
E-mail: [email protected]
ASIA
Asia Pacific
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E-mail: [email protected]
China
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22 Jianguomen Wai Street
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Phone: +86 400 6661 802
Fax: +86 10 6515 0263
E-mail: [email protected]
India
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Phone: +0091 22 6249 5043
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Fax: +82 2 528 1456 & 1457
E-mail: [email protected]
SOUTH AMERICA
Brazil
Thomson
Av. Tamboré, 1077
Barueri, SP - 06460-000
Phone: +55 11 3616-0191
Fax: +55 11 3611 1982
E-mail: [email protected]
Electromechanical
Linear Actuators
Product Overview
2 1
WARNING — USER RESPONSIBILITY
FAILURE OR IMPROPER SELECTION OR IMPROPER USE
OF THE PRODUCTS DESCRIBED HEREIN OR
RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY
AND PROPERTY DAMAGE.
• This document and other information from Parker-Hannifi n
Corporation, its subsidiaries and authorized
distributors provide product or system options for further
investigation by users having technical expertise.
• The user, through its own analysis and testing, is solely
responsible for making the fi nal selection of the system
and components and assuring that all performance, endurance,
maintenance, safety and warning requirements of
the application are met. The user must analyze all aspects of the
application, follow applicable industry standards,
and follow the information concerning the product in the current
product catalog and in any other materials
provided from Parker or its subsidiaries or authorized
distributors.
• To the extent that Parker or its subsidiaries or authorized
distributors provide component or system options
based upon data or specifi cations provided by the user, the user
is responsible for determining that such
data and specifi cations are suitable and suffi cient for all
applications and reasonably foreseeable uses of the
components or systems.
3
Table of Contents
Parker Hannifin
................................................................................. 4
Markets and Applications
.................................................................. 8
Technical Features
.......................................................................... 10
Rod-Style Linear Handling Actuators
.............................................. 13
ETH - High Force Electro Thrust
Cylinder ...................................................................... 14
ETT- Electric Tubular Motor
...........................................................................................
20
OSP-E..SBR - Ball Screw Actuator with Internal Plain Bearing
Guide .......................... 24
OSP-E..STR - Trapezoidal Screw Actuator with Internal Plain
Bearing Guide .............. 27
Rodless Linear Handling Actuators
................................................. 31
HPLA - Linear Actuator with Plastic-Sheated Rollers
................................................... 32
HLE - Linear Actuator with Plastic-Sheathed Rollers
.................................................... 34
OSP-E..BHD - Belt Actuator with Integrated Ball Bearing and
Roller Guide ................ 38
OSP-E..B - Belt Actuator with Internal Plain Bearing Guide
.......................................... 41
OSP-E..SB - Ball Screw Actuator with Internal Plain Bearing
Guide............................. 44
OSP-E..ST - Trapezoidal Screw Actuator with Internal Plain
Bearing Guide ................. 46
OSP-E..BV - Vertical Belt Actuator with Integrated Ball
Bearing Guide ........................ 48
LCB Compact Linear Actuator with Sliding Bearing
...................................................... 52
LCR - Light Capacity Rodless Miniature Linear Positioner
............................................ 54
HMR - Electromechanical Linear Actuator
..................................................................... 56
Precision
Positioners.................................................................. ..... 65
XE - Screw Driven Positioner
.......................................................................................... 66
XR - Screw Driven Positioner
.......................................................................................... 69
MX - Miniature Positioners
..............................................................................................
74
MX80M - Free Travel and Micrometer Driven Stages
..................................................... 78
4
Parker Hannifin
3
Parker Hannifin
The global leader in motion and control technologies
A world class player on a local stage
Global Product Design
Parker Hannifin has more than
40 years experience in the design
and manufacturing of drives,
controls, motors and mechanical
products. With dedicated global
product development teams,
Parker draws on industry-leading
technological leadership and
experience from engineering teams
in Europe, North America and Asia.
Local Application Expertise
Parker has local engineering
resources committed to adapting
and applying our current products
and technologies to best fit our
customers’ needs.
Manufacturing to Meet
Our Customers’ Needs
Parker is committed to meeting the
increasing service demands that
our customers require to succeed
in the global industrial market.
Parker’s manufacturing teams
seek continuous improvement
through the implementation of
lean manufacturing methods
throughout the process. We
measure ourselves on meeting our
customers’ expectations of quality
and delivery, not just our own. In
order to meet these expectations,
Parker operates and continues to
invest in our manufacturing facilities
in Europe, North America and Asia.
Electromechanical
Worldwide Manufacturing
Locations
Europe
Littlehampton, United Kingdom
Dijon, France
Offenburg, Germany
Filderstadt, Germany
Milan, Italy
Asia
Wuxi, China
Jangan, Korea
Chennai, India
North America
Rohnert Park, California
Irwin, Pennsylvania
Charlotte, North Carolina
New Ulm, Minnesota
Local Manufacturing
and Support in Europe
Parker provides sales assistance
and local technical support through
a network of dedicated sales
teams and authorized technical
distributors throughout Europe.
For contact information, please
refer to the Sales Offices on the
back cover of this document or visit
www.parker.com
Offenburg, Germany
Littlehampton, UK
Milan, Italy
Dijon, FranceFilderstadt, Germany
2
Global Partnerships
Global Support
Parker is committed to helping
make our customers more
productive and more profitable
through our global offering of
motion and control products
and systems. In an increasingly
competitive global economy,
we seek to develop customer
relationships as technology
partnerships. Working closely with
our customers, we can ensure the
best selection of technologies to
suit the needs of our customers’
applications.
Parker Hannifin
The global leader in motion and control technologies and
systems
Electromechanical
Technologies for High Dynamic
Performance and Precision
Motion
Parker electromechanical
technologies form an important
part of Parker’s global motion and
control offering. Electromechanical
systems combine high
performance speed and position
control with the flexibility to adapt
the systems to the rapidly changing
needs of the industries we serve.
Parker Hannifin Corporation
With annual sales exceeding
$13 billion in fiscal year 2014,
Parker Hannifin is the world’s
leading diversified manufacturer of
motion and control technologies
and systems, providing precision-
engineered solutions for a wide
variety of mobile, industrial
and aerospace markets. The
company employs approximately
57,500 people in 50 countries around
the world.
Parker has increased its annual
dividends paid to shareholders for
58 consecutive fiscal years,
among the top five longest-running
dividend-increase records in the
S&P 500 index.
For more information, visit the
company’s website at
www.parker.com, or its investor
information website at
www.phstock.com.
Issue: 08/2014
53
Parker Hannifin
The global leader in motion and control technologies
A world class player on a local stage
Global Product Design
Parker Hannifin has more than
40 years experience in the design
and manufacturing of drives,
controls, motors and mechanical
products. With dedicated global
product development teams,
Parker draws on industry-leading
technological leadership and
experience from engineering teams
in Europe, North America and Asia.
Local Application Expertise
Parker has local engineering
resources committed to adapting
and applying our current products
and technologies to best fit our
customers’ needs.
Manufacturing to Meet
Our Customers’ Needs
Parker is committed to meeting the
increasing service demands that
our customers require to succeed
in the global industrial market.
Parker’s manufacturing teams
seek continuous improvement
through the implementation of
lean manufacturing methods
throughout the process. We
measure ourselves on meeting our
customers’ expectations of quality
and delivery, not just our own. In
order to meet these expectations,
Parker operates and continues to
invest in our manufacturing facilities
in Europe, North America and Asia.
Electromechanical
Worldwide Manufacturing
Locations
Europe
Littlehampton, United Kingdom
Dijon, France
Offenburg, Germany
Filderstadt, Germany
Milan, Italy
Asia
Wuxi, China
Jangan, Korea
Chennai, India
North America
Rohnert Park, California
Irwin, Pennsylvania
Charlotte, North Carolina
New Ulm, Minnesota
Local Manufacturing
and Support in Europe
Parker provides sales assistance
and local technical support through
a network of dedicated sales
teams and authorized technical
distributors throughout Europe.
For contact information, please
refer to the Sales Offices on the
back cover of this document or visit
www.parker.com
Offenburg, Germany
Littlehampton, UK
Milan, Italy
Dijon, FranceFilderstadt, Germany
2
Global Partnerships
Global Support
Parker is committed to helping
make our customers more
productive and more profitable
through our global offering of
motion and control products
and systems. In an increasingly
competitive global economy,
we seek to develop customer
relationships as technology
partnerships. Working closely with
our customers, we can ensure the
best selection of technologies to
suit the needs of our customers’
applications.
Parker Hannifin
The global leader in motion and control technologies and
systems
Electromechanical
Technologies for High Dynamic
Performance and Precision
Motion
Parker electromechanical
technologies form an important
part of Parker’s global motion and
control offering. Electromechanical
systems combine high
performance speed and position
control with the flexibility to adapt
the systems to the rapidly changing
needs of the industries we serve.
Parker Hannifin Corporation
With annual sales exceeding
$13 billion in fiscal year 2014,
Parker Hannifin is the world’s
leading diversified manufacturer of
motion and control technologies
and systems, providing precision-
engineered solutions for a wide
variety of mobile, industrial
and aerospace markets. The
company employs approximately
57,500 people in 50 countries around
the world.
Parker has increased its annual
dividends paid to shareholders for
58 consecutive fiscal years,
among the top five longest-running
dividend-increase records in the
S&P 500 index.
For more information, visit the
company’s website at
www.parker.com, or its investor
information website at
www.phstock.com.
Issue: 08/2014
64
Parker brings together the
technology and experience
required for continuous process
applications across many
industries. Electromechanical and
drive products combine application
specific functionality to ensure
precise speed control and reliable
performance. Parker combines
more than 30 years of application
experience with a global sales and
support network that help you
increase your machine availability.
Solution
s to Improve Productivity, Increase
Flexibility and Save Energy
Process Productivity and Reliability
Converting machinery A
C
-
D
ri
ve
s
D
C
-
D
ri
ve
s
D
ir
e
c
t-
D
ri
ve
M
o
to
rs
S
e
rv
o
D
ri
ve
s
a
n
d
M
o
to
rs
Folding, g
Plastics processing machinery
Wire and cable
Wire and ca
Printing Machinery
Other industries
Sugar proces
Energy Efficiency and Clean Power
Parker has developed the technology to maximize the efficient
use of energy in industrial, mobile and infrastructure
environments.
Hybrid Vehicle Technology
Now having adapted it's technology
for use in hybrid and electric vehicles,
Parker offers solutions for:
• Electro Hydraulic Actuation
• Hybrid and Electric Vehicle traction
• Vehicle auxiliary systems
Energy-savings for pumps,
fans and compressors
Parker has the drive technology
to help you make significant
energy savings in the operation of
pumps, fans and compressors in
both industrial and infrastructure
applications, including:
• Commercial refrigeration
• Water and wastewater treatment
• Building automation
• Industrial processes
• Hydraulic systems
Power Generation and Conversion
Using proven inverter technology,
Parker has developed numerous
solutions for the conversion of energy
for commercial use from a variety of
sources, including wind, wave and
energy storage devices.
74
Parker brings together the
technology and experience
required for continuous process
applications across many
industries. Electromechanical and
drive products combine application
specific functionality to ensure
precise speed control and reliable
performance. Parker combines
more than 30 years of application
experience with a global sales and
support network that help you
increase your machine availability.
Digital Ebook  A RESOURCE ON ELECTRIC LINEAR .docx

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Digital Ebook A RESOURCE ON ELECTRIC LINEAR .docx

  • 1. Digital Ebook A RESOURCE ON ELECTRIC LINEAR ACTUATORS What a machine designer needs to know http://tolomatic.com Contents 2 A RESOURCE ON ELECTRIC LINEAR ACTUATORS Table of Contents I. WHY ELECTRIC ACTUATORS? EVALUATING THE BASICS a. What is a linear actuator? b. Electric linear actuator advantages II. ACCURACY AND REPEATABILITY: CRITICAL CONCEPTS
  • 2. III. SELECTING THE RIGHT ACTUATOR: ROD OR RODLESS a. Rod actuators b. Rodless electromechanical actuators c. Screw selection d. Consider the environment e. Comparing manufacturers’ specs f. Calculating actuator life IV. MOTOR SELECTION: STEPPER OR SERVO? a. Stepper motors b. Servo motors c. Motor mounting V. SYSTEM INSTALLATION: CONSIDERATIONS a. Optimizing actuator alignment b. Minimizing electrical noise VI. ELECTRIC ACTUATOR APPLICATIONS: IMPROVED EFFICIENCY a. Automotive manufacturing b. Process industries c. Food and beverage processing d. Material handling VII. CONCLUSION: TOTAL COST OF OWNERSHIP CONTRIBUTOR CREDITS There were many talented Tolomatic contributors responsible for the contents of this ebook. Thank you to:
  • 3. GARY ROSENGREN, director of engineering; IGOR GLIKIN, senior mechanical engineer; PATRICK HOBART, senior software development engineer; SCOTT KLAR, electrical engineer; AARON DIETRICH, director of marketing; RYAN KLEMETSON, target markets manager; DAN CASS, director of business development; RYAN BOURGOINE, engineering supervisor; and all the support staff that helped produce the materials contained in this e-book. We hope you find the contents informative. P.3 P.4 P.5 P.11 P.13 P.14
  • 4. P.16 http://tolomatic.com Why electric actuators? Evaluating the basics COURTESY OF TOLOMATIC I. 3 WHAT IS A LINEAR ACTUATOR? A linear actuator is defined as a device that creates motion in a straight line. These devices are used in automotive manufacturing, process industries, food and beverage processing, material handling, robotics, and in other places where linear motion is required. Industrial applications use pneumatic-, hydraulic- and electric- powered linear actuators. Pneumatic and hydraulic power produce linear motion naturally so pneumatic and hydraulic linear actuators (often called cylinders) can be fairly simple devices. However, in electric-powered linear actuators an electric motor’s rotary motion must be converted to linear motion through a screw/nut system or a belt. This means electric linear actuators are somewhat more complex devices than pneumatic or hydraulic actuators but can offer significant advantages in many applications. ELECTRIC LINEAR ACTUATOR ADVANTAGES The decision of whether to use an electric, pneumatic or hydraulic linear actuator is a crucial one for engineers
  • 5. when specifying a linear actuator. A pneumatic cylinder has advantages — ease-of-use, lower cost — but carries with it inefficiencies in operation with potential compressed air leaks. A hydraulic cylinder can provide high-thrust capabilities in a variety of environments, but they can be prone to fluid leaks which are not environmentally friendly. An electric linear actuator can offer distinct benefits: • Able to handle complex motion profiles — Motion control systems have become more complicated. Electric linear actuators can provide precise control of speed, acceleration, deceleration and force, outperforming fluid power technologies. They offer accuracy/repeatability, infinite positioning capabilities with data feedback and are able to handle complex motion profiles. • Able to adapt to changing needs — An electric actuator's programming can be changed. If parameters change, the actuator can be adjusted to meet new specifications with minimal downtime and loss of productivity. • Lower lifetime cost with highest efficiency and lowest energy use — Electric-powered systems operate at 70-80% total system efficiency, compared to 40-55% for hydraulic and 10-15% for pneumatic systems. In fact, savings over the total life cycle cost of the actuator—including the savings in efficiency, energy use and reduced maintenance—can far outweigh the initial acquisition cost. • Readily integrate into other electric production systems —
  • 6. Electric actuators are easily integrated into motion control systems with the use of PLCs, HMIs and other devices to offer enhanced motion control, data collection and diagnostics. A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 1 Why electric actuators? Evaluating the basics BLOG Subscribe to Tolomatic’s blog to learn more about actuators and linear motion. http://tolomatic.com http://blog.tolomatic.com/bid/60410/What-is-a-linear-actuator http://blog.tolomatic.com/what-you-need-to-know-about- electric-actuators https://www.tolomatic.com/Info- Center/Educational/Converting-Hydraulic-Systems-to-Electric http://blog.tolomatic.com/?utm_source=DesignWorld&utm_med ium=eBook&utm_content=blog&utm_campaign=Dwebook http://blog.tolomatic.com/?utm_source=DesignWorld&utm_med ium=eBook&utm_content=blog&utm_campaign=Dwebook Accuracy and repeatability: Critical concepts COURTESY OF TOLOMATIC II. 4 When discussing a linear motion application, many users ask “How accurate is this actuator?” The answer is more
  • 7. involved than simply stating a number. Accuracy and repeatability are related but not the same. Accuracy refers to the ability of an actuator to achieve a commanded position. Repeatability refers to the ability of the actuator to achieve a position time after time. The relative importance of the two qualities depends on a thorough understanding of your application. Positional errors can come from several sources: the actuator itself, the motor and its encoder, and the motor driver. Also, the way an actuator is deployed has significant influence on the results. There are numerous actuator styles/types manufactured to various degrees of precision and subsequent cost. There are also models that have high repeatability without high accuracy. In the right application these less accurate and lower-priced models can deliver excellent performance. The key to success is understanding what is required in your application and choosing the actuator accordingly. By doing so, you can avoid excess costs and design a system with the best overall value. WHITE PAPER DOWNLOAD: Download our whitepaper, Introduction to accuracy and repeatability in linear motion systems, for a thorough explanation.
  • 8. A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 2 Accuracy and repeatabiity: Critical concepts http://tolomatic.com https://www.tolomatic.com/info-center/resource- details/infographic-accuracy-repeatability-in-linear-actuators https://www.tolomatic.com/info-center/resource- details/accuracy-repeatability-linear-motion-systems III. 5 Selecting the right actuator: Rod or rodless COURTESY OF TOLOMATIC When you need to specify an electric linear actuator, begin by answering these simple questions: • What needs to be moved? • How far and fast does it have to move? • How much does the load weigh? • How much space is available for the system? • What are the force requirements? The answers will make actuator selection easier and lead you to the initial decision of whether to specify an electric rod actuator or a rodless electromechanical actuator. The pushing action of an electric rod actuator works well in many applications. However, this type of actuator may not be suitable if the item is heavy
  • 9. and must be supported or if the distance traveled is long. Rod-style actuators do not provide support to a load. The weight of the load can deflect the rod, causing wear on seals and bearings and even triggering major positioning problems. Rodless actuators guide and support the load throughout the stroke length. They also have a size advantage because their entire stroke length is contained in their body rather than having a rod that extends out from the body. However, these actuators may not stand up to harsh environments without shielding. A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 3 Selecting the right actuator: Rod or rodless http://tolomatic.com Selecting the right actuator: Rod or rodless (CONTINUED) ROD ACTUATORS 6 SELECTION TIPS Factory automation applications are requiring faster speeds and greater precision, so machine designers are changing to electric linear actuators. Electric rod actuators can deliver speed, control and precision but may come with a higher initial cost and a more complex design than fluid power cylinders (either pneumatic or hydraulic).
  • 10. Given the growing demand for cost control, engineering and analysis at the front end of an application can reduce overall costs and result in automation systems with higher reliability, better performance, lower energy expenditures and less maintenance. WHITE PAPER DOWNLOAD: Download our white paper, Top ten tips: How to specify electric rod-style actuators for optimal performance, reliability and efficiency, for the full explanation. TRADITIONAL AND INTEGRATED ELECTRIC LINEAR ACTUATORS A trend in electric linear motion is to integrate the control, drive, motor and other components with the actuator. This has created a new category: integrated actuators. Pneumatic cylinders have been used widely because they are inexpensive to buy and simple to apply. Electric rod-style actuators are gaining popularity due to their flexibility and energy efficiency. However, electric rod actuators have been perceived as a more expensive and complex solution. An integrated electric actuator offers advantages over both
  • 11. pneumatic and traditional electric actuator solutions. Compared to a pneumatic cylinder an integrated electric actuator will save energy. Compared to a traditional electric actuator an integrated solution will save purchase, installation, and assembly costs, while reducing the overall footprint of the machine. VIEW OUR WEBINAR Learn about electric rod actuator selection at our webinar. INFOGRAPHIC 10 tips for specifying electric rod actuators A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 3 Selecting the right actuator: Rod or rodless http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/778?utm_source=DW&utm_medium=eBook&utm_conten t=10TipsInfographic&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/441?utm_source=DesignWorld&utm_medium=eBook&ut m_content=10tipselectricrodwp&utm_campaign=Dwebook http://info.tolomatic.com/webinar-tips-on-selecting-electric- rod-style-actuators- 0?utm_source=DW&utm_medium=eBook&utm_content=Tipsele ctricrodwebinar&utm_campaign=Dwebook
  • 12. 7 SELECTION TIPS Rodless electro-mechanical actuators have an advantage over electric rod actuators, as many have the ability to support and carry loads. This can reduce costs and design time by eliminating the need for other load- bearing and guiding elements. In contrast to rod-style actuators, a rodless actuator’s stroke lies completely within the length of its body, resulting in a smaller working footprint. In addition, rodless actuators can be either screw- or belt-driven, with each drive type having its own advantages depending on the application. VIEW OUR WEBINAR Learn about rodless electromechanical actuator selection at our webinar RODLESS ELECTROMECHANICAL ACTUATORS WHITE PAPER DOWNLOAD: Download our white paper, Specifying electric rodless actuators: Ten tips for maximizing actuator life and system performance, for the full explanation.
  • 13. WHITE PAPER DOWNLOAD: To learn more about drive train selection, download our white paper, Screw-driven vs. belt-driven rodless actuators: How to select drive trains for reliability, efficiency and long service life. Selecting the right actuator: Rod or rodless (CONTINUED) A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 3 Selecting the right actuator: Rod or rodless BELT DRIVE OR SCREW DRIVE? Rodless electromechanical actuators commonly use one of two main drive train types to convert a motor’s rotary motion to linear motion: a power screw drive or a timing belt drive. While both offer efficiency, reliability and long life, each has its limitations. Power screw drives and timing belts carry a dual function. They are used for linear positioning, and they transmit power. A screw mechanism produces linear motion by rotating either the screw or the nut in an assembly. Similarly, timing belt drives transmit torque and
  • 14. linear motion from a driving pulley via the belt, which in turn moves the actuator's carriage. The specifics of a motion control application determine which drive train to select. Key factors in drive train selection are length of stroke, linear velocity and acceleration, as well as orientation of the move. Drive trains vary in capacity, so the thrust of the actuator as well as load and force of the actuator carrier will affect drive train choice. INFOGRAPHIC 10 tips for specifying rodless electric linear actuators http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/776?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=10TipsInfographic2&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/448?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=maximizingwp&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/452?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=Beltorscrewdrivewp&utm_campaign=Dwebook
  • 15. http://info.tolomatic.com/webinar-tips-on-selecting-electric- rodless- actuators?utm_source=DesignWorld&utm_medium=Ebook&utm _content=10TipsElectricActuatorWebinar&utm_campaign=Dwe book 8 Selecting the right actuator: Rod or rodless (CONTINUED) A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 3 Selecting the right actuator: Rod or rodless GUIDE DOWNLOAD: Learn about terminology and the uses of each type of lead screw design in our guide, Which screw? Picking the right technology. Click here to download. SCREW SELECTION When it comes to specifying an electric linear actuator it is critical to select the right lead screw for the application because the screw is the major drive component in most electric actuators. There are three primary types of screws used in linear actuators: acme, ball
  • 16. and roller. The differences among these screw types are in the design of the thread shape along with the design and operation of a matching nut. http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/673?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=ScrewSelectionGuide&utm_campaign=Dwebook 9 CONSIDER THE ENVIRONMENT The IP rating system standardizes ingress protection levels for enclosures and machine components like linear actuators. Electric actuators are used in manufacturing applications that can expose them to dust, liquids and chemical solutions. Generally, rod- style models are better suited to harsh conditions. Unshielded rodless actuators can be employed if conditions require a rating of IP54 or lower. For higher levels of ingress protection, rodless actuators often require external shields or enclosures. When selecting linear actuators for applications that require dust and liquid ingress protection, consider the types of dust and liquids to which the actuators will be exposed. This will ensure environmental compatibility, optimal performance and long service life.
  • 17. WHITE PAPER DOWNLOAD: Learn more about the IP rating system and how it relates to linear actuator selection. Download our white paper, IP ratings and the manufacturing environment: How to apply linear actuators for quality, safety and long service life. COMPARING MANUFACTURERS’ SPECS When it comes to electric linear actuator selection, a product that has the highest output rating—in loads, moments, or thrust—can have a distinct competitive advantage. Often the product that has the highest rating is seen to be the superior, most robust choice. However, what really counts is how long the actuator performs (that is, its useful life). How can you use manufacturers’ published specification ratings to make a meaningful comparison? In order to compare components, the specification values need to be normalized to the rated life of travel the actuator is capable of when external forces are applied. Then the resulting data can be evaluated in the same units of measure. WHITE PAPER DOWNLOAD:
  • 18. Our whitepaper, Select the right linear actuator: making sense of manufacturer specifications, explains how to normalize specs. Download it here. Selecting the right actuator: Rod or rodless (CONTINUED) A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 3 Selecting the right actuator: Rod or rodless http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/450?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=IPratingsWP&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/450?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=IPratingsWP&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/450?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=IPratingsWP&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/446?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=ManufacturerSpecsWP&utm_campaign=Dwebook 10
  • 19. Selecting the right actuator: Rod or rodless (CONTINUED) A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 3 Selecting the right actuator: Rod or rodless CALCULATING ACTUATOR LIFE Determining the useful life of machines and their components is a fundamental challenge in any motion system design project. The useful life (or service life) of a machine or component like a linear actuator is the period during which it continues to operate and satisfy its required function. The useful life of any actuator depends on the life of the components that perform most of the mechanical work or carry the most load. Lead screw drives are an example of such a critical component. The life of a lead screw can be defined as the actual life achieved by a screw before it fails for any reason. Among possible reasons for failure are: fatigue, excessive wear, corrosion, contamination, insufficient structural strength, or loss of any function required by the application. WHITE PAPER DOWNLOAD: What is DLR, L10 and Equivalent Load? How do they affect actuator life? Download our guide: How
  • 20. to estimate life in ball and roller screw-driven actuators. WHITE PAPER DOWNLOAD: Download our white paper, The truth about actuator life: screw drive survival, for examples of load-life conversion calculations. SIZE IT RIGHT! Wish specifying electrical linear actuators was easier? Our electric actuator sizing software could be just what you need. It’s technology that’ll save time and hassle when selecting actuators. http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/764?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=EstimateActuatorLifeGuide&utm_campaign=Dwebo ok http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/764?utm_source=DesignWorld&utm_medium=Ebook&ut
  • 21. m_content=EstimateActuatorLifeGuide&utm_campaign=Dwebo ok http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/445?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=TruthActuatorLifeWP&utm_campaign=Dwebook http://sizeit.tolomatic.com/?utm_source=DesignWorld&utm_me dium=Ebook&utm_content=ActuatorSizingSoftware&utm_camp aign=Dwebook Motor selection: Stepper or servo? COURTESY OF TOLOMATIC IV. 11 Electric linear actuators rely on motors to generate torque. Selecting the appropriate motor type is a major consideration when specifying an electric linear actuator. The decision must take into account the application’s parameters. Two common motor options for electric actuators are stepper motors and servo motors. A machine designer needs to understand the advantages and disadvantages of both types in order to specify the best motor for an application SERVO MOTORS A brushless servo motor has three wiring phases in the stator. The rotor has several pairs of permanent magnets aligned with alternating
  • 22. poles. When the phase windings are energized, torque is generated between the phase’s electromagnet poles and the rotor’s magnetic poles causing the rotor to rotate. A servo motor is paired with some type of encoder to provide position and speed feedback. Servo actuators perform well in high speed and force-sensitive applications. They are closed loop devices and require the feedback of sensors plus additional cabling to connect to controllers. SERVO MOTOR ADVANTAGES • Higher degree of control over position and speed. • Higher degree of accuracy due to closed loop control. • Maintain torque throughout speed range; can output brief periods of “peak torque.” SERVO MOTOR DISADVANTAGES • More complex and may cost more. • Control loops may require tuning which adds complexity. STEPPER MOTORS A stepper motor is a brushless DC motor that divides a full rotation into equal steps. The rotor has magnetic teeth that align to the electromagnetic poles in the stator. The motor’s position is known by the
  • 23. number of steps commanded. The motor's shaft can be commanded to move and hold at a step without any feedback sensor. Electric actuators with stepper motors offer excellent performance and lower cost for low speed, high torque and high repeatability applications with open-loop control. STEPPER MOTOR ADVANTAGES • Open loop position control. No feedback information needed. • Lower cost. • High torque at low speeds. • Dentent torque (the torque required to turn the motor when no current is applied to the windings) is much higher in stepper motors and is beneficial in preventing the weight of the load back-driving the motor when the system is powered down. • Excellent repeatability. Accuracy within 3-5%. STEPPER MOTOR DISADVANTAGES • Insufficient torque can lower accuracy. Motor may be oversized (up to 50% above maximum torque requirement), leading to higher cost. • Motor resonance is common resulting in torque loss and noise. WHITE PAPER DOWNLOAD: Download our white
  • 24. paper, Choosing stepper- or servo- driven actuators to replace air cylinders, for a thorough explanation. A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 4 Motor Selection: Stepper or servo? http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/454?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=%20StepperorServoDrivenWP&utm_campaign=Dwe book Motor selection : Stepper or servo? (CONTINUED) A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 4 Motor Selection: Stepper or servo? 12 MOTOR MOUNTING Attaching a motor to an electric linear actuator requires an adaptor or housing. The mounting hardware needed varies based on motor type and brand as well as on how the motor is to be mounted — either inline or reverse parallel.
  • 25. An inline configuration directly couples the motor’s driving shaft to the actuator through a housing. This configuration provides excellent motor support and allows maximum power transmission from the motor to the actuator. The downside, though, is that this type of configuration takes up horizontal space (length of motor + length of actuator). A reverse parallel configuration is a space-saving alternative (on the horizontal plane); however, some of the motor’s power will be lost due to the gear or belt drive required. This loss may reduce some of the actuator’s force. The needs of your application will help you decide on the appropriate configuration. GET THE RIGHT FIT WITH OUR YOUR MOTOR HERE® PROGRAM Selecting and assembling the components of an electric actuator system adds to your workload as a busy engineer. We developed the Your Motor Here® program to make it quicker and easier to match motor to actuator and get the right motor mounting hardware.
  • 26. http://tolomatic.com http://www.tolomatic.com/info-center/tools/your-motor- here?utm_source=DesignWorld&utm_medium=Ebook&utm_con tent=YourMotorHere&utm_campaign=Dwebook System installation: Considerations COURTESY OF TOLOMATIC A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 5 System installations: Considerations V. 13 OPTIMIZING ACTUATOR ALIGNMENT Many industrial machines rely on linear guidance components, often driven by some type of linear actuator, to guide and support moving elements. Guidance components include profiled rail, round rail or other rolling or sliding bearing structures. However, guidance components can affect system performance and actuator life by introducing challenges such as: • Inconsistent results • Shorter-than-expected useful life • Premature wear or failure of actuator components • Erratic motion, such as speed variations or wobbling When you are installing a linear motion system that includes guidance components, be sure actuator compliance mechanisms are in
  • 27. place to compensate for stress points. Also, you will need to address both parallelism in the system and perpendicular alignment bending moment issues. Careful consideration of these elements will give you optimal performance of the actuator and guidance system. WHITE PAPER DOWNLOAD: Our white paper, Rules of actuator and guide alignment in linear motion systems, provides an explanation of these installation issues. Download it here. MINIMIZING ELECTRICAL NOISE Electric drives and actuators operate in harsh conditions that subject equipment to electrical noise—a random fluctuation in an electrical signal that is present in all electronic circuits. Electrical noise can disrupt actuator control signals, cause erratic movements or precipitate complete system failure. By understanding electrical noise, system designers can take steps to minimize interference and ensure greater reliability. A designer needs to consider two types of electrical noise: ground
  • 28. loop and induced noise. Both can be mitigated with appropriate installation, cable separation and shielding. Communications issues can be mitigated by minimizing noise and employing appropriate daisy chaining. To avoid difficulties, we suggest considering issues with electrical noise and communication integrity early in the system design and installation process. Because electrical noise cannot be eliminated completely and a communication system can never be completely fail- proof, the primary objectives during system design/installation are to mitigate the risks associated with electrical interference and make informed financial decisions based on the operating environment and costs associated with potential system failure. WHITEPAPER DOWNLOAD: Our white paper, Minimizing electrical noise in actuator drive systems for maximum reliability and performance, discusses the causes of electrical noise, its effects on communication and how to minimize it. Download
  • 29. the paper here. http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/449?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=RulesofAlignmentWP&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/451?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=MinimizingNoiseWP&utm_campaign=Dwebook Electric actuator applications: Improved efficiency COURTESY OF TOLOMATIC A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 6 Electric actuator applications: Improved efficiency VI. 14 AUTOMOTIVE MANUFACTURING As the global automotive industry continues to grow, demand for automated production is also expanding to control quality and production costs. As part of this move toward increased automation, many automotive manufacturers employ servo-controlled resistance spot welding equipment within their body-in-white production lines. However, automobile manufacturers producing vehicles for
  • 30. markets including China, Brazil, Korea and India may still use traditional pneumatic spot welding equipment. As vehicle production in these markets ramps up and consumers demand higher quality, these manufacturers are considering a transition to robot-carried, servo- controlled spot welding equipment. Servo-actuated resistance spot welding guns provide better welds, require less maintenance, and offer lower operating costs, increased life and better return-on- investment (ROI) than their pneumatic counterparts. PROCESS INDUSTRIES Valves are critical components in processing plants because they control the flow of raw materials and finished goods. Some valve automation applications, especially control valves, require increasingly sophisticated motion control solutions. To meet these demands, engineers can use an emerging technology in valve actuation: brushless servo valve actuators. Control valves operate in two ways: linear motion (rising stem) or rotary motion (half turn or quarter turn). Each method is designed for specific functions and applications. Rising stem valves are typically used in mission critical areas of a process where reliability, repeatability, accuracy and responsiveness are all desired.
  • 31. Brushless servo motion control can provide performance improvements beyond traditional actuation methods. Electric linear valve actuators (both brush and brushless servo motor types) provide excellent control in valve applications. Electric actuator technology has evolved, bringing costs down, reducing the number of components, making set-up user friendly, and dramatically improving overall system efficiencies when compared to pneumatic and hydraulic systems. WHITE PAPER DOWNLOAD: For the full story download our white paper, How to select the best linear actuator type for valve automation in process industries. WHITE PAPER DOWNLOAD: For more information on the advantages of electric servo actuators over pneumatic actuators, download our white paper, Servo spot welding
  • 32. offers superior performance and lower lifetime costs for auto manufacturing. http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/779?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=ElectricServoWeldingSlideshow&utm_campaign=D webook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/455?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=ValveAutomationWP&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/442?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=ServoSpotWeldingWP&utm_campaign=Dwebook Electric actuator applications: Improved efficiency (CONTINUED) A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 6 Electric actuator applications: Improved efficiency 15 FOOD AND BEVERAGE PROCESSING Production of food and beverages on today’s industrial scale would not be possible without a high level of automation. Pneumatic, hydraulic and electric actuators are critical moving components in food
  • 33. and beverage processing and packaging equipment. In addition to being efficient, machines used to process food must keep food safe by not harboring or introducing bacteria, lubricating fluids or other contaminants that could harm consumers. As part of food and beverage production machines, electric actuators must be manufactured from materials that resist corrosion while not leaching toxic substances into food products or packaging. Also, actuators need to be designed in a way that eliminates collection points where bacteria can flourish. Suitable actuators must be capable of withstanding frequent washdowns with water, detergents, steam, caustic soda, citric acid or other types of sanitary cleaning solutions. MATERIAL HANDLING Material handling systems keep manufacturing processes moving. They bring raw materials to machines, take workpieces
  • 34. to new processes, and package, palletize and prepare finished goods for shipping. Every plant has some type of material handling need, and most plants have a range of systems, each with its own specifications. This means material handling encompasses an extremely wide variety of applications. Conveying equipment gets this material handling work done, often with the accurate and reliable functioning of linear actuators. When specifying linear actuators for material handling, consider the application’s specific needs for positioning accuracy, energy efficiency and cost of ownership. If a facility produces several products, then actuators that are easily programmable to several positioning set-ups may be needed. Also, it is important to consider the manufacturing environment, both the presence of harmful moisture and dust and the use of harsh chemicals like those employed to wash down food processing equipment. Actuators must be able to withstand these conditions. For stories of how we have worked with material handling equipment manufacturers to solve their challenges, download these case studies: • Tolomatic ERD electric actuators help global conveyor manufacturer Intralox make all the right moves
  • 35. • Hytrol puts the skinny on bulky conveyor diverters with space-saving rodless cylinder from Tolomatic WHITE PAPER DOWNLOAD: Our white paper, Evaluating actuators for washdown in food & beverage applications, discusses these issues fully. Download it here. http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/439?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=IntraloxCaseStudy&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/439?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=IntraloxCaseStudy&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/434?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=HytrolCaseStudy&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/434?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=HytrolCaseStudy&utm_campaign=Dwebook http://blog.tolomatic.com/ Conclusion: Total cost of ownership
  • 36. COURTESY OF TOLOMATIC A RESOURCE ON ELECTRIC LINEAR ACTUATORS Chapter 7 Conclusion: Total cost of ownership VII. 16 ELECTRIC VS. PNEUMATIC AND HYDRAULIC LINEAR ACTUATORS In the final analysis cost is a major factor in the acquisition of any piece of automation equipment, but cost can be considered in different ways. Evaluating the cost of automation has evolved from an overly simplistic process to a more realistic one. Purchase price often has been the only cost factor considered when buying an automation device. That practice is giving way, though, to a thorough analysis of the device’s “total cost of ownership” (TCO). The TCO concept combines purchase price with the cost of operating the device over its projected service life. When it comes to linear actuators, pneumatic actuators (air cylinders) are known for their low initial cost and durability. They have been a staple in factory automation equipment for decades because they are simple, easy to maintain and provide reasonable control over linear motion.
  • 37. Hydraulic actuators are known for their high force output and can be used where pneumatic power is not possible, but their characteristic of leaking fluid is becoming a concern in today's fragile outdoor environments. Since the development of more flexible, precise and reliable electric actuators with increased force capacities and greener, more efficient operation, there has been a debate over which technology offers the best overall solution for industrial plant optimization. The case for switching to electric actuators has focused on the ability of electric actuators to achieve more precise control of motion (in terms of position, speed, acceleration and force), along with providing superior accuracy and repeatability. That superior performance, though, comes with a higher initial price. While it’s true that electric actuators have a higher initial cost, this is not the complete story. There are factors that can make an electric actuator a more economical option than an air or hydraulic cylinder over the life of a device or machine. These include efficiency, electric utility costs, air and hydraulic fluid leaks, maintenance, actuator replacement, product quality, changeover time, cycle times and contamination risks. These factors combined with
  • 38. purchase price determine the total cost of ownership for an actuator. Considering TCO early in the process of specifying linear actuators means a machine designer will analyze the entire service life of a choice with related costs, as well as the initial purchase price. This analysis will show that in many cases choosing an electric actuator over a pneumatic or hydraulic device will provide a lower TCO, making the electric actuator the better choice. WHITE PAPER DOWNLOAD: Electric rod actuators vs. hydraulic cylinders: A comparsion of the pros and cons of each technology. WHITE PAPER DOWNLOAD: Electric actuators vs. pneumatic cylinders: A comparison based on total cost of ownership
  • 39. DOWNLOAD INFOGRAPHIC: For more information on Calculating total cost of linear actuators. http://tolomatic.com http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/780?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=ElectricvsCylindersWP&utm_campaign=Dwebook http://www.tolomatic.com/Info-Center/Resource- Details/resource- details/443?utm_source=DesignWorld&utm_medium=Ebook&ut m_content=ElectricvsPneumaticWP&utm_campaign=Dwebook https://www.tolomatic.com/info-center/resource- details/infographic-calculating-total-cost-of-ownership 17 Contact Us United States Headquarters 3800 County Road 116 Hamel, MN 55340, USA Local Phone: 763.478.8000 Toll Free: 1.800.328.2174 Fax: 763.478.8080 www.tolomatic.com [email protected]
  • 40. European Office Tolomatic Europe GmbH Elisabethenstr. 20 65428 Rüsselsheim Germany Phone: +49 6142 17604-0 [email protected] China Facility Tolomatic Automation Products (Suzhou) Co. Ltd. (ServoWeld® inquiries only) No. 60 Chuangye Street, Building 2 Huqui District, SND Suzhou Jiangsu 215011--P.R., China Phone: +86 512 6750 8506 Fax: +86 512 6750 8507 [email protected] 9900-9237_01 http://tolomatic.com http://tolomatic.com http://www.tolomatic.com mailto:help%40tolomatic.com?subject= mailto:servoweldchina%40tolomatic.com?subject= https://twitter.com/Tolomatic https://www.facebook.com/Tolomatic/ https://www.linkedin.com/company/tolomatic https://www.youtube.com/user/TolomaticInc Button 15: Button 11: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13:
  • 41. Page 14: Page 15: Page 16: Button 10: Page 2: Page 3: Page 4: Page 5: Page 6: Page 7: Page 8: Page 9: Page 10: Page 11: Page 12: Page 13: Page 14: Page 15: Page 16: Button 17: Button 18: Button 19: Button 16: Button 13: Page 17: Button 12: Page 17: Glide Screw™ Combines the Features of a Linear Bearing and Screw in One Compact Package www.thomsonlinear.com 2 www.thomsonlinear.com/glidescrew Introduction What is a Glide Screw™? Part linear bearing, part lead screw; a combination of two favorites to create something better than both. The patent- pending Glide Screw brings high performance, fast installation and less complexity in a small package. Standard Sizes and Configurations Stocked for Immediate Availability • Metric Series includes 4, 6 and 10 mm nominal diameters • Inch Series includes 3/16”, 1/4” and 3/8” nominal diameters • Flanged and cylindrical nut bodies standard Optional Configurations for Harsh Environments Available • High temperature resistant – inside ovens or autoclaves (up to
  • 42. 175 °C) • Clean room – in robot vacuum chambers, laboratories or medical equipment (ISO 6) • Food grade – in packaging and food processing equipment Custom Nut Configurations, Screw Diameters and Thread Leads Available • Don’t see your perfect configuration – call us, we make custom sizes Easy to Install and Maintenance Free! • All that is required is a Glide Screw and an anti-rotation feature • No need for reference surfaces or the pain of “floating” your system into alignment • Plug and play – install it and forget it • Integrated Thomson’s patented Lube for Life technology • Bearing grade plastic and stainless steel construction standard 3 Glide Screw www.thomsonlinear.com/glidescrew Benefits of the Glide Screw Technology The Glide Screw combines the features of a linear bearing and a lead screw in one smooth operating package. Inch and metric sizes are standard. Custom sizes are also available quickly and to your specification.
  • 43. Reduced Footprint • Integrated lead screw / linear bearing • Side load / moment load capable Improved Equipment Uptime • Screw and linear bearing are already aligned • Component alignment is not critical – smooth and quiet motion • Integrated lubrication block – Thomson Lube for Life standard Lower Cost of Ownership • Less complexity – faster installation • Less components – simpler bill of material • Maintenance free – no lubrication required Glide Nut Housing Lubrication Block Radial Bearing Glide Screw 4 www.thomsonlinear.com/glidescrew Typical Application Every engineer’s objective is to eliminate parts, streamline the design, simplify installation and reduce the maintenance required – exactly what a Glide Screw™ does.
  • 44. 3D Printing or Engraving Innovative and portable multi-axis printers / engravers are revolutionizing rapid prototyping and consumer products. The Glide Screw can reduce the number of components, decrease system complexity, decrease assembly time and produce a better machine as decribed in the table below. It requires no maintenance, can shorten overall guided length and has a longer life which makes our Thomson Glide Screw the better design solution and less expensive overall. Generic design Glide Screw design Generic vs. Glide Srew Design Generic Glide Screw X, Y Area Compactness 4100 mm2 1600 mm2 Z Axis Length 64 mm 46 mm Approx. Installation Time 45 min 15 min Number of Parts 74 30 Self Aligning No Yes Maintenance Free No Yes 5
  • 45. Glide Screw www.thomsonlinear.com/glidescrew Other Application Ideas Fluid Pumps Syringe pumps and integrated fluid pumps are a growing segment of the medical industry. The stringent demands of these customers require smaller, cleaner, smoother, and quieter products. This is exactly the challenge the Glide Screw was designed to solve. Fluid Pipetting / 3-Axis Lab Automation Lab automation and diagnostics require faster and more accurate systems in smaller footprints. Optimized for z-axis applications requiring the smallest footprint, the Glide Screw can replace traditional linear guided products that are overdesigned and more expensive. Generic design Glide Screw design Other Applications The Glide Screw improves performance in a smaller and lighter package. It is easier and faster to install.
  • 46. Also, it requires less maintenance compared to traditional lead screw and linear guide solutions. Other great applications for the Glide Screw include: • Test tube handling • Lab automation • CD duplication • Pick & place • Syringe pumps • In vitro diagnostics • Medical imaging 6 www.thomsonlinear.com/glidescrew Engineering The Glide ScrewTM is designed to actuate a moment load or a side load without additional linear guidance or support. Therefore, the screw deflection is the determinant feature and the following charts must be used when properly sizing a Glide Screw for an application. How the Glide Screw Works The unique design of Glide Screw allows it to handle axial, radial and moment loads without additional guidance. The result is an efficient and space saving design that is quick and easy to install with reduced maintenance needs compared to traditional
  • 47. solutions. End Support Decide which type of end support you will use to enable accurate selection of diameter. Fixed support – utilizes a support journal length at least 1.5 × the journal diameter – such as dual ball bearings. Simple support – uses a single ball bearing, a plain bearing, or a bushing. End support configurations shown at left: 1. Simple / simple 2. Fixed / simple 3. Fixed / fixed Max. Length Max. Length Max. Length 1. 2. 3. = load lines = reactionary forces axial load
  • 49. 160 180 0 25 50 75 100 125 150 175 200 250 0 2 4 6 8 10 12 14 16 18 20 225 0 50 100 150 200 250 300 350 400 450 500 0 2 4
  • 50. 6 8 10 12 14 16 18 0 50 100 150 200 250 300 350 400 450 500 0 100 200 300 400 500 600 700 800 1000
  • 51. 900 Engineering Moment Load and Radial Load Charts Determine your end support configuration and then use the following charts to properly size the nominal diameter of the Glide Screw. Select a product diameter that lies above and/or to the right of the design moment or load. The lead of a Glide Screw is defined as the axial distance traveled for one revolution of the screw. Select the appropriate lead of your screw based on the desired speed and resolution of travel. Note that the Glide Screw is limited to 300 RPM. Inch Diameter Models Unsupported length [in] Screw diameters = 0.375 inch = 10 mm = 0.250 inch = 6 mm = 0.188 inch = 4 mm End support type = fixed in both ends = simple in one end and fixed in other = simple in both ends Conversion factors
  • 52. 1.0 in-lb = 0.113 Nm 1.0 lb = 4.448 N M om en t l oa d [in -lb s] Ra di al lo ad [l bs ] M om en t l oa
  • 53. d [N m ] Ra di al lo ad [N ] Unsupported length [in] Unsupported length [mm]Unsupported length [mm] Metric Diameter Models 8 www.thomsonlinear.com/glidescrew Specifications and Part Numbers Glide Screw™ configurations GSF - screw and flanged nut assembly GSC - screw and cylindrical nut assembly Inch Series Dimensions Screw Diam.
  • 54. [in] Screw Lead [in] Screw and Nut Assembly Part No. Max Axial Load [lbs] Max Moment Load [in-lbs] Max Screw Length [in] Dimensions [in] Effic. [%] A B C D E F G H J BCD 0.188 0.050 GS_18x0050 30.0 20.5 6.000 0.375 0.750 0.281 0.875 0.140 0.125 0.094
  • 55. 0.188 0.177 0.625 46 0.125 GS_18x0125 68 0.250 0.050 GS_25x0050 45.0 47.5 10.000 0.500 1.000 0.313 1.000 0.140 0.150 0.125 0.250 0.237 0.750 40 0.500 GS_25x0500 82 0.375 0.063 GS_37x0063 70.0 137.5 18.000 0.875 1.750 0.563 1.750 0.200 0.300 0.188 0.438 0.406 1.250 36 0.500 GS_37x0500 78 1.000 GS_37x1000 83 Metric Series Dimensions Screw Diam. [mm] Screw Lead [mm]
  • 56. Screw and Nut Assembly Part No. Max Axial Load [N] Max Moment Load [Nm] Max Screw Length [mm] Dimensions [mm] Effic. [%] A B C D E F G H J BCD 4 1 GS_4x1M 89.0 2.3 150 10 20 6.5 20 2.5 3 2 5 5 15 45 4 GS_4x4M 75 8 GS_4x8M 82
  • 57. 6 1 GS_6x1M 133.4 5.4 250 13 26 7.75 25 3.5 4 3 7 5.75 19 36 6 GS_6x6M 75 12 GS_6x12M 82 10 2 GS_10x2M 311.4 15.5 450 22 44 14 44 5 7 4 10 9.85 32 40 6 GS_10x6M 66 12 GS_10x12M 77 B F A h11 C B G H11
  • 58. H J D BCD E A h9 Part number example: GSC25x0500 = glide screw assembly, cylindrical nut, 0.250 inch diameter by 0.500 inch lead Standard Products • Acetal nut body with all stainless steel internal components • 303 stainless steel screw • Integrated Lube for Life lubrication block • Temperature Rating: -40° to 65°C (-40° to 150°F) • Clean Room ISO 7 (Class 10000) 9 Glide Screw www.thomsonlinear.com/glidescrew End Machining End support type Recommended end machining
  • 59. fixed / fixed fixed / simple simple / simple Inch Series End Machining Dimensions Screw Diam. [in] Screw Lead [in] Screw Part No. Root Diameter [in] Recommended Bearing Dimensions [in] OD [mm] ID [mm] W [mm] Bearing Trade No. A B C D E F G H L THD 0.188
  • 60. 0.050 GS18x0050 0.12 7 2,5 2,5 692X 0.197 0.098 N/A 0.098 N/A 0.022 0.120 0.075 0.157 N/A 0.125 GS18x0125 0.13 0.250 0.050 GS25x0050 0.19 13 4 5 624 0.295 0.118 0.610 0.157 0.374 0.020 0.217 0.150 0.256 M4×x0.5 0.500 GS25x0500 0.16 0.375 0.063 GS37x0063 0.30 19 6 6 626 0.394 0.197 0.728 0.236 0.453 0.030 0.266 0.220 0.315 M6×0.750.500 GS37x0500 0.27 1.000 GS37x1000 0.24 Metric Series End Machining Dimensions Screw Diam. [mm] Screw Lead [mm] Screw Part No. Root Diameter
  • 61. [mm] Recommended Bearing Dimensions [mm] OD [mm] ID [mm] W [mm] Bearing Trade No. A B C D E F G H L THD 4 1 GS4x1M 2.8 7 2.5 2.5 692X 5.00 2.50 N/A 2.50 N/A 0.55 3.05 1.90 4.00 N/A4 GS4x4M 2.8 8 GS4x8M 2.8 6 1 GS6x1M 4.6 13 4 5 624 7.50 3.00 15.50 4.00 9.50 0.51 5.51 3.81 6.50 M4×x0.56 GS6x6M 4.4 12 GS6x12M 4.4
  • 62. 10 2 GS10x2M 7.3 13 6 6 626 10.00 5.00 18.50 6.00 11.50 0.76 6.76 5.59 8.00 M6×0.756 GS10x6M 8.4 12 GS10x12M 8.4 10 www.thomsonlinear.com/glidescrew Installation Comparing Alternative Technologies The Glide Screw™ is both drive system and linear guide, so these features are already perfectly aligned and cannot bind. Therefore, installation is simple and the mating components do not require high tolerance geometric features. Drive and Guide Technology Comparison Feature Lead Screw / Linear Bearings Lead Screw / Profile Rail Glide Screw Small Footprint Good Better Best Ease of Installation Better Good Best Stiffness Better Best Good Misalignment Tolerant Better Good Best Lube for Life Lubrication Optional Optional Integrated
  • 63. Total Cost of Ownership Good Better Best 11 Glide Screw www.thomsonlinear.com/glidescrew Installation Basic Installation Guidlines The success of the Glide Screw in an application is primarily dependent on the end support configuration. Since the Glide Screw is a combination of a lead screw and linear bearing, the ability to handle non-axial loads while maintaining positional accuracy is the key to a successful installation. The load capacity curves are based on screw deflection and not the lead nut capacity. Therefore, stiffness of the assembly determines load capacity. 1 2 3 4 5 Installation Step-by-Step 1. Select end support configuration A fixed bearing support should be selected when possible.
  • 64. A simple support is typically a single radial bearing that is allowed to float axially to compensate for misaligments. Typical methods of attaching end supports is either base mounting or flange mounting. 2. Select motor and drive configuration Select a motor and your means for coupling the screw to the motor. Typically this is done by a belt, gearing or an in-line coupler. It is also possible to directly integrate a Glide Screw with a stepper motor, which can reduce complexity and save space. 3. Select nut mounting interface The standard configurations for the glide nut are flanged nuts and cylindrical nuts but are by no means the only solutions. Custom configurations, custom mounting and design assistance are available from Thomson. 4. Determine anti-rotation method The Glide Screw requires an external anti-rotation feature on the nut housing to function correctly. Two examples of acceptable methods are the finger / slot solution or the bushing / linear shaft solution. 5. Mount the assembly into the application The actual mounting of the Glide Screw is easy once all of the periphrials have been determined and designed. Just bolt the assembly in place and fire up the system. No critical alignment procedures are necessary as the drive system and linear guidance are already in perfect alignment. Glide_Screw_BREN-0002-04 | 20180412KB Specifications are subject to change without notice. It is the responsibility of the product user to determine the suitability of
  • 65. this product for a specific application. All trademarks property of their respective owners. ©2018 Thomson Industries, Inc. www.thomsonlinear.com USA, CANADA and MEXICO Thomson 203A West Rock Road Radford, VA 24141, USA Phone: 1-540-633-3549 Fax: 1-540-633-0294 E-mail: [email protected] Literature: literature.thomsonlinear.com EUROPE United Kingdom Thomson Office 9, The Barns Caddsdown Business Park Bideford, Devon, EX39 3BT Phone: +44 (0) 1271 334 500 E-mail: [email protected] Germany Thomson Nürtinger Straße 70 72649 Wolfschlugen Phone: +49 (0) 7022 504 0 Fax: +49 (0) 7022 504 405 E-mail: [email protected] France Thomson Phone: +33 (0) 243 50 03 30 Fax: +33 (0) 243 50 03 39 E-mail: [email protected] Italy Thomson
  • 66. Largo Brughetti 20030 Bovisio Masciago Phone: +39 0362 594260 Fax: +39 0362 594263 E-mail: [email protected] Spain Thomson E-mail: [email protected] Sweden Thomson Estridsväg 10 29109 Kristianstad Phone: +46 (0) 44 24 67 00 Fax: +46 (0) 44 24 40 85 E-mail: [email protected] ASIA Asia Pacific Thomson E-mail: [email protected] China Thomson Rm 2205, Scitech Tower 22 Jianguomen Wai Street Beijing 100004 Phone: +86 400 6661 802 Fax: +86 10 6515 0263 E-mail: [email protected] India Thomson c/o CNRG Energy India Pvt. Ltd. Unit No. FF A 07 Art Guild House, A Wing, 1st Floor, L.B.S Marg Kurla – West, Mumbai – 400070 India Phone: +0091 22 6249 5043 Email: [email protected]
  • 67. Japan Thomson Minami-Kaneden 2-12-23, Suita Osaka 564-0044 Japan Phone: +81-6-6386-8001 Fax: +81-6-6386-5022 E-mail: [email protected] South Korea Thomson ROA 704 ASEM Tower (Samsung-dong) 517 Yeongdong-daero, Gangnam-gu Seoul, S. Korea, Zip Code: 06164 Phone: +82 2 6917 5048 & 5049 Fax: +82 2 528 1456 & 1457 E-mail: [email protected] SOUTH AMERICA Brazil Thomson Av. Tamboré, 1077 Barueri, SP - 06460-000 Phone: +55 11 3616-0191 Fax: +55 11 3611 1982 E-mail: [email protected] Electromechanical Linear Actuators Product Overview 2 1
  • 68. WARNING — USER RESPONSIBILITY FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE. • This document and other information from Parker-Hannifi n Corporation, its subsidiaries and authorized distributors provide product or system options for further investigation by users having technical expertise. • The user, through its own analysis and testing, is solely responsible for making the fi nal selection of the system and components and assuring that all performance, endurance, maintenance, safety and warning requirements of the application are met. The user must analyze all aspects of the application, follow applicable industry standards, and follow the information concerning the product in the current product catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors. • To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifi cations provided by the user, the user is responsible for determining that such data and specifi cations are suitable and suffi cient for all applications and reasonably foreseeable uses of the components or systems. 3 Table of Contents
  • 69. Parker Hannifin ................................................................................. 4 Markets and Applications .................................................................. 8 Technical Features .......................................................................... 10 Rod-Style Linear Handling Actuators .............................................. 13 ETH - High Force Electro Thrust Cylinder ...................................................................... 14 ETT- Electric Tubular Motor ........................................................................................... 20 OSP-E..SBR - Ball Screw Actuator with Internal Plain Bearing Guide .......................... 24 OSP-E..STR - Trapezoidal Screw Actuator with Internal Plain Bearing Guide .............. 27 Rodless Linear Handling Actuators ................................................. 31 HPLA - Linear Actuator with Plastic-Sheated Rollers ................................................... 32 HLE - Linear Actuator with Plastic-Sheathed Rollers .................................................... 34 OSP-E..BHD - Belt Actuator with Integrated Ball Bearing and Roller Guide ................ 38 OSP-E..B - Belt Actuator with Internal Plain Bearing Guide .......................................... 41 OSP-E..SB - Ball Screw Actuator with Internal Plain Bearing Guide............................. 44 OSP-E..ST - Trapezoidal Screw Actuator with Internal Plain Bearing Guide ................. 46
  • 70. OSP-E..BV - Vertical Belt Actuator with Integrated Ball Bearing Guide ........................ 48 LCB Compact Linear Actuator with Sliding Bearing ...................................................... 52 LCR - Light Capacity Rodless Miniature Linear Positioner ............................................ 54 HMR - Electromechanical Linear Actuator ..................................................................... 56 Precision Positioners.................................................................. ..... 65 XE - Screw Driven Positioner .......................................................................................... 66 XR - Screw Driven Positioner .......................................................................................... 69 MX - Miniature Positioners .............................................................................................. 74 MX80M - Free Travel and Micrometer Driven Stages ..................................................... 78 4 Parker Hannifin 3 Parker Hannifin The global leader in motion and control technologies A world class player on a local stage Global Product Design Parker Hannifin has more than
  • 71. 40 years experience in the design and manufacturing of drives, controls, motors and mechanical products. With dedicated global product development teams, Parker draws on industry-leading technological leadership and experience from engineering teams in Europe, North America and Asia. Local Application Expertise Parker has local engineering resources committed to adapting and applying our current products and technologies to best fit our customers’ needs. Manufacturing to Meet Our Customers’ Needs Parker is committed to meeting the increasing service demands that our customers require to succeed in the global industrial market. Parker’s manufacturing teams seek continuous improvement through the implementation of lean manufacturing methods throughout the process. We measure ourselves on meeting our customers’ expectations of quality and delivery, not just our own. In order to meet these expectations, Parker operates and continues to invest in our manufacturing facilities in Europe, North America and Asia.
  • 72. Electromechanical Worldwide Manufacturing Locations Europe Littlehampton, United Kingdom Dijon, France Offenburg, Germany Filderstadt, Germany Milan, Italy Asia Wuxi, China Jangan, Korea Chennai, India North America Rohnert Park, California Irwin, Pennsylvania Charlotte, North Carolina New Ulm, Minnesota Local Manufacturing and Support in Europe Parker provides sales assistance and local technical support through a network of dedicated sales teams and authorized technical distributors throughout Europe. For contact information, please refer to the Sales Offices on the back cover of this document or visit www.parker.com Offenburg, Germany
  • 73. Littlehampton, UK Milan, Italy Dijon, FranceFilderstadt, Germany 2 Global Partnerships Global Support Parker is committed to helping make our customers more productive and more profitable through our global offering of motion and control products and systems. In an increasingly competitive global economy, we seek to develop customer relationships as technology partnerships. Working closely with our customers, we can ensure the best selection of technologies to suit the needs of our customers’ applications. Parker Hannifin The global leader in motion and control technologies and systems Electromechanical Technologies for High Dynamic Performance and Precision Motion Parker electromechanical technologies form an important part of Parker’s global motion and
  • 74. control offering. Electromechanical systems combine high performance speed and position control with the flexibility to adapt the systems to the rapidly changing needs of the industries we serve. Parker Hannifin Corporation With annual sales exceeding $13 billion in fiscal year 2014, Parker Hannifin is the world’s leading diversified manufacturer of motion and control technologies and systems, providing precision- engineered solutions for a wide variety of mobile, industrial and aerospace markets. The company employs approximately 57,500 people in 50 countries around the world. Parker has increased its annual dividends paid to shareholders for 58 consecutive fiscal years, among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company’s website at www.parker.com, or its investor information website at www.phstock.com. Issue: 08/2014
  • 75. 53 Parker Hannifin The global leader in motion and control technologies A world class player on a local stage Global Product Design Parker Hannifin has more than 40 years experience in the design and manufacturing of drives, controls, motors and mechanical products. With dedicated global product development teams, Parker draws on industry-leading technological leadership and experience from engineering teams in Europe, North America and Asia. Local Application Expertise Parker has local engineering resources committed to adapting and applying our current products and technologies to best fit our customers’ needs. Manufacturing to Meet Our Customers’ Needs Parker is committed to meeting the increasing service demands that our customers require to succeed in the global industrial market. Parker’s manufacturing teams seek continuous improvement
  • 76. through the implementation of lean manufacturing methods throughout the process. We measure ourselves on meeting our customers’ expectations of quality and delivery, not just our own. In order to meet these expectations, Parker operates and continues to invest in our manufacturing facilities in Europe, North America and Asia. Electromechanical Worldwide Manufacturing Locations Europe Littlehampton, United Kingdom Dijon, France Offenburg, Germany Filderstadt, Germany Milan, Italy Asia Wuxi, China Jangan, Korea Chennai, India North America Rohnert Park, California Irwin, Pennsylvania Charlotte, North Carolina New Ulm, Minnesota Local Manufacturing and Support in Europe Parker provides sales assistance and local technical support through
  • 77. a network of dedicated sales teams and authorized technical distributors throughout Europe. For contact information, please refer to the Sales Offices on the back cover of this document or visit www.parker.com Offenburg, Germany Littlehampton, UK Milan, Italy Dijon, FranceFilderstadt, Germany 2 Global Partnerships Global Support Parker is committed to helping make our customers more productive and more profitable through our global offering of motion and control products and systems. In an increasingly competitive global economy, we seek to develop customer relationships as technology partnerships. Working closely with our customers, we can ensure the best selection of technologies to suit the needs of our customers’ applications.
  • 78. Parker Hannifin The global leader in motion and control technologies and systems Electromechanical Technologies for High Dynamic Performance and Precision Motion Parker electromechanical technologies form an important part of Parker’s global motion and control offering. Electromechanical systems combine high performance speed and position control with the flexibility to adapt the systems to the rapidly changing needs of the industries we serve. Parker Hannifin Corporation With annual sales exceeding $13 billion in fiscal year 2014, Parker Hannifin is the world’s leading diversified manufacturer of motion and control technologies and systems, providing precision- engineered solutions for a wide variety of mobile, industrial and aerospace markets. The company employs approximately 57,500 people in 50 countries around the world. Parker has increased its annual dividends paid to shareholders for 58 consecutive fiscal years,
  • 79. among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company’s website at www.parker.com, or its investor information website at www.phstock.com. Issue: 08/2014 64 Parker brings together the technology and experience required for continuous process applications across many industries. Electromechanical and drive products combine application specific functionality to ensure precise speed control and reliable performance. Parker combines more than 30 years of application experience with a global sales and support network that help you increase your machine availability. Solution
  • 80. s to Improve Productivity, Increase Flexibility and Save Energy Process Productivity and Reliability Converting machinery A C - D ri ve s D C - D ri ve s
  • 83. Wire and cable Wire and ca Printing Machinery Other industries
  • 84. Sugar proces Energy Efficiency and Clean Power Parker has developed the technology to maximize the efficient use of energy in industrial, mobile and infrastructure environments. Hybrid Vehicle Technology Now having adapted it's technology for use in hybrid and electric vehicles, Parker offers solutions for: • Electro Hydraulic Actuation • Hybrid and Electric Vehicle traction • Vehicle auxiliary systems
  • 85. Energy-savings for pumps, fans and compressors Parker has the drive technology to help you make significant energy savings in the operation of pumps, fans and compressors in both industrial and infrastructure applications, including: • Commercial refrigeration • Water and wastewater treatment • Building automation • Industrial processes • Hydraulic systems Power Generation and Conversion Using proven inverter technology, Parker has developed numerous solutions for the conversion of energy for commercial use from a variety of
  • 86. sources, including wind, wave and energy storage devices. 74 Parker brings together the technology and experience required for continuous process applications across many industries. Electromechanical and drive products combine application specific functionality to ensure precise speed control and reliable performance. Parker combines more than 30 years of application experience with a global sales and support network that help you increase your machine availability.