This document discusses linear motion components, including linear bearing types (ball & rod, cross roller, plastic roller, round rail, square rail) and mechanical drive types (manual, screw driven, belt & pulley driven). It provides information on selecting the proper component based on factors like load, travel distance, accuracy needs. The document is an overview presented by LINTECH of their positioning components and systems.

1. Mechanical Training 11-2007
11-
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2. Training Outline
Linear Bearing Types
Drive Mechanism Types
Review of Positioning Components
LINTECH catalogs
Round Rail Products
Ball Screw Assemblies
How to select a proper product
Standard and Custom products
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3. LINTECH’s View Of The
Overall mechanical positioning market
Low End Middle High End
Repeatablilty Repeatability Repeatablilty
> .001 inch
.005 between .005 & .0001 inch < .0001 inch
System W
s ith System W
s ith System W
s ith
* Rod T Actuators
ype * Round Rail Linear Bearings * Air Bearings
* Plastic Rollers * Square Rail Linear Bearings * Cross Roller Bearings
* Plastic Bearings * Cross Roller Linear Bearings * High Accuracy
* Ball Slides Lead Screws
* Acm or Ball Screw Driven
e * Linear M otors
* Belt Driven
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4. Linear Bearing Types
Ball & Rod
Cross Roller
Plastic or Steel Roller
Round Rail
Square Rail
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5. Linear Bearing Types
Ball & Rod
Light Loads
less than 200 lbs
Small Moment Loads
Short Travels
less than 24 inches
Good Accuracy and Repeatability
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6. Linear Bearing Types
Cross Roller
Medium Loads
less than 600 lbs
Medium Moment loads
Short Travels
less than 24 inches
High Accuracy & Repeatability
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7. Linear Bearing Types
Plastic or Steel Roller
Light Loads
less than 200 lbs
Moment loads increase friction
can cause damage to rollers
Long Travels
greater than 20 feet
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8. Linear Bearing Types
Round Rail
Medium Loads
less than 600 lbs
Good moment loads
Long Travels
greater than 20 feet
Good Accuracy and Repeatability
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9. Linear Bearing Types
Round Rail
Recirculating Balls
Long Life
Adjustable Preload on bearings
Waycovers optional
Most industrial applications
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10. Linear Bearing Types
Square Rail
Heavy Loads
greater than 3000 lbs
Very good moment loads
Long Travels
greater than 20 feet
Very good Accuracy and Repeatability
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11. Linear Bearing Types
Square Rail
Recirculating Balls
Long Life
Adjustable Preload on bearings
Waycovers optional
Most industrial applications
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12. Linear Bearing Types
Round Rail versus Square Rail
Round Rail Square Rail
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13. Linear Bearing Types
LINTECH provides round rail products within its
Positioning Components product line
LINTECH provides round rail & square rail products
within its Positioning Systems product line
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14. Mechanical Drive Types
Manual
Pneumatic
Hydraulic
Rack & Pinion
Screw Driven
Belt & Pulleys
Linear Motors
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15. Mechanical Drive Types
LINTECH provides
Manual Driven
Screw Driven
Belt & Pulley Driven
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16. Screw Driven
Acme Screw
The nut grooves ride in the matching acme screw
grooves, much like the nut & bolt which yields a high
friction system.
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17. Screw Driven
Ball Screw
The nut utilizes one or more circuits of re-circulating
steel balls which roll between the nut & ball screw
threads (grooves), providing a low friction system.
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18. Screw Driven
Ball Screw with Turcite Nut
Very similar in operation to an acme screw system.
Nut contacts screw grooves differently thus
producing a more efficient, higher speed & higher
duty cycle assembly than an acme.
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19. Screw Driven
Backlash
Movement of the screw occurs before the carriage (or
nut) occurs.
Not important for Unidirectional positioning
applications
Want to eliminate for Bidirectional positioning
applications - improves repeatability
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20. Screw Driven
Backlash
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21. Screw Driven
Two Nut Preloaded Assembly
Two nuts separated by a spring (or spacer) used to
eliminate backlash.
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22. Screw Driven
One Nut Preloaded Assembly
Single nut used with oversized balls to eliminate
backlash.
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23. Acme Screw
Typically is a plastic or bronze nut
Provided in English or Metric versions
Two Nut versions
Preloaded (no backlash)
Non-preloaded (less expensive)
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24. Acme Screw
Ideal for:
Vertical applications
Low Duty Cycle
Low Speed
Low Noise
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25. Ball Screw
Rolled Ball Screw
Screw is rolled
Nut is tapped
Provided in English or Metric versions
Three Nut versions
Preloaded (no backlash)
Non-preloaded (less expensive)
Non-preloaded Turcite nut
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26. Ball Screw
Rolled Ball Screw
Rougher operating than precision ball screw
Louder audible noise than precision ball screw
Lower cost than precision ball screw
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27. Ball Screw
Precision Ball Screw
Screw is precision rolled
Nut is ground
Provided in English or Metric versions
Two Nut versions
Preloaded (no backlash)
Non-preloaded (less expensive)
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28. Ball Screw
Precision Ball Screw
Rougher operating than ground ball screw
Louder audible noise than ground ball screw
Lower cost than ground ball screw
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29. Ball Screw
Ground Ball Screw
Screw is ground
Nut is ground
Provided in English or Metric version
Highest in cost
Smoothest operating
One Nut version
Preloaded (no backlash)
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30. Ball Screw
Ideal for:
High Duty Cycle
High Speed
Long Life
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31. Belt Drive
Typically used to move loads at high speeds (50+
IPS) with less repeatability & accuracy than screw
driven systems.
Drive system utilizes two pulleys along with a steel
reinforced polyurethane belt.
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32. Belt Drive
Features
Quieter than ball screws in high speed applications
Not as repeatable as a screw driven systems
Ideal for high duty cycle, high speed, and long travel
applications
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33. Accuracy & Repeatability
Accuracy
How well a positioning system makes a true relative
move in reference to an absolute location.
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34. Accuracy & Repeatability
Repeatability
How accurate, over successive move attempts, a
positioning system can return to a known, previously
traveled location. The direction of travel can either be
from one side (unidirectional), or from both sides
(bidirectional).
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35. Accuracy & Repeatability
Accurate & Repeatable
Ideal System
Expensive
Hard to do
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36. Accuracy & Repeatability
Accurate & NOT Repeatable
Not wanted in MOST
positioning applications
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37. Accuracy & Repeatability
Not Accurate & NOT Repeatable
Not wanted in MOST
positioning applications
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38. Accuracy & Repeatability
NOT Accurate - But Repeatable
Desired for most
positioning applications
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39. Accuracy & Repeatability
Repeatability is Most Important
If your system is repeatable - you can make it more
accurate for a given application by having the
electronic position controller move a little bit more, or
a little bit less, to get to the exact position required -
then rely on the repeatability of the overall system to
move back to this location over & over again
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40. Accuracy & Repeatability
People frequently mistake Repeatability for
Accuracy
Remember to ask your customer if they are looking
for a repeatable system OR an accurate system
Help them to understand the difference
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41. LINTECH Positioning Components
Provide the customer with the opportunity to use off
the shelf components when designing & building
their Positioning System
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42. LINTECH Positioning Components
Catalog
Website
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43. LINTECH Positioning Components
Strengths
Large Standard Selection
Quick Delivery
Many Custom Options
Good Profit Margins
up to 30% GP and NO programming required
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44. LINTECH Ball Screw Assemblies
Catalog
Website
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45. LINTECH Ball Screw Assemblies
How to select an assembly
Load
Life
Safety Factors
Other
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46. LINTECH Ball Screw Assemblies
Strengths
Large Standard Selection
Quick Delivery
Many Custom Options
Good Profit Margins
up to 30% and NO programming required
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47. LINTECH Positioning Systems
Provide the customer with the opportunity to use off the
shelf manual or motor ready finished Positioning Systems
when designing & building their system.
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48. LINTECH Positioning Systems
Catalog
Website
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49. LINTECH Positioning Systems
How to select a Positioning System
Load
Life
Safety Factors
Speeds
Accelerations & Thrust Forces
Accuracy & Repeatability
Other
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50. LINTECH 130 Series
Best Attributes
Least expensive
Long travel screw driven
Light loads
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51. LINTECH 140 Series
Best Attributes
Least expensive belt driven system
Ideal for light loads
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52. LINTECH 100, 110 & 120 Series
Best Attributes
Larger load capacity than 130 & 140
Long travel screw or belt driven, SS bearings & rails
Many multi-axis configurations
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53. LINTECH 90 Series
Best Attributes
Round rail design
Large carriage size
Long travel screw driven
Large screw diameters - faster speeds
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54. LINTECH 160, 170 & 180 Series
Best Attributes
Larger load capacity than 90, 100 & 150 series
Long travel screw or belt driven
Lower cost than 150
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55. LINTECH Positioning Systems
New Product Coming 1st Quarter of 2008
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56. LINTECH Positioning Systems
Strengths
Similar to 170 series – “Cartesian Look”
Gaps on table are sealed - IP-30 rated unit
Main competition is Star
People are highly interest in ordering just because of its “look”
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57. LINTECH 150 Series
Best Attributes
Low profile square rail design
Larger load capacity than 100
Larger carriage size than 100
Large carriage sizes (4 & 8 inch)
Long travel screw driven
Best straightness & flatness
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58. LINTECH 200 Series
Best Attributes
Low profile square rail design
Larger load capacity than 150 & 170
Large carriage sizes (6 & 12 inch)
Long travel screw driven
Best straightness & flatness
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59. LINTECH 250 Series
Best Attributes
Low profile square rail design
Largest load capacity
Large carriage sizes (6 & 12 inch)
Long travel screw driven
Best straightness & flatness
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60. LINTECH 550 Series
Best Attributes
Enclosed square rail design
Large load capacity belt driven
Long travel lengths (up to 30 feet)
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61. LINTECH 300 & 400 Series
Best Attributes
300 Series
Medium Load Capacities
Medium Accuracy
2 Competitors
400 Series
Large Load Capacities
Large Thru Hole
No Competitors
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62. LINTECH Positioning Systems
Strengths
Large # of standard catalog selections
Large # of options in catalog
Certain combination of options allows our prices to be 10 to 30%
below the competition
Certain combination of options can put our prices 10 to 30% higher
than the competition - but our option configuration will make the
competitors solution a CUSTOM solution - ours is STANDARD
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63. LINTECH Positioning Systems
Strengths
Can make Multi-axis systems:
Stacking
Custom Bottom
Base Plates
Using Brackets
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64. LINTECH Positioning Systems
Strengths
Provide the Automation Specialists with a mechanical
solution to combine with their electronics - maximize
their profits
Because of our Limited Distribution Channels - You have a solution
which is unique to your customer - thus you are in the drivers seat
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65. LINTECH Positioning Systems
Service Manuals
Detailed technical data to assist in proper installation,
operation and maintenance
has information on lubrication
See Website for easy access
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