Rolex Spring is introducing its 2009 catalog, which features a redesigned format. Rolex Spring has relocated its production facility to a sister division, Maryland Precision Spring in Baltimore, and invested in new production and heat treating equipment to streamline manufacturing processes. Rolex Spring can continue to rely on quality disc springs for various industries such as aviation, transportation, and machinery. The catalog provides information on Rolex Spring's products, services, and standard spring series.
Artificial intelligence (AI) is everywhere, promising self-driving cars, medical breakthroughs, and new ways of working. But how do you separate hype from reality? How can your company apply AI to solve real business problems?
Here’s what AI learnings your business should keep in mind for 2017.
Artificial intelligence (AI) is everywhere, promising self-driving cars, medical breakthroughs, and new ways of working. But how do you separate hype from reality? How can your company apply AI to solve real business problems?
Here’s what AI learnings your business should keep in mind for 2017.
Tải miễn phí sổ tay bảo dưỡng vòng bi công nghiệp của SKF. Sổ tay bảo dưỡng vòng bi SKF là tài liệu hướng dẫn bảo dưỡng do SKF soạn thảo, với nội dung chỉ dẫn giúp bạn bảo dưỡng đúng cách, an toàn và chuyên nghiệp.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
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2. 09RolexCvrR3 9/3/09 8:57 AM Page 2
A message from General Manager MW Industries serves
Ways to contact
You can always rely on Rolex Spring... market leaders in
Rolex Spring... Steven C. Krajewski industries such as…
Mail Dear Rolex Spring Customer, Rolex Spring is a
leading manufacturer Agricultural
We at Rolex Spring are proud to introduce our 2009 Catalog, of disc springs with
our first completely re-designed catalog in a very long time! It is an extensive
Automotive
just one of the many exciting changes we have made her e, all inventory and custom
of which are intended to help us better serve you. manufacturing
8900 Kelso Drive capabilities. For forty Auto Racing
Baltimore, MD 21221 We have relocated our production facility to our sister
years Rolex Spring
division, Maryland Precision Spring in Baltimore, Maryland,
has been serving such industries as aviation/aer ospace,
and have used this move as an opportunity to invest in new
transportation, machining and construction and many mor e. Aviation
PHONE production and heat treating equipment. Applying the Aerospace
principles of Lean Manufacturing and Six Sigma, we have
Rolex Spring provides:
also streamlined and optimized our manufacturing pr ocesses
across the board. s Large disc spring inventory Computers
Since our founding in 1969, you can continue to r ely on Rolex s Custom manufacturing
Spring for— Electrical
410-391-7400
s Exacting quality standards and certifications
s Rolex Spring is just as committed to quality today as we s Metric and standard sizes
were in 1996 when we were the first disc spring Energy
manufacturer to achieve QS and ISO certifications. s ODs from 1/4" to 40"
FAX
s We offer design and engineering support – fr om drawing s Outstanding customer service and technical support Hand and Power
board to installation – for your applications. Tools
Rolex Spring is proud to be a part of Maryland Pr ecision
s Our manufacturing expertise enables us to work in all Spring. Both businesses are members of the MW Industries
grades and types of steel, in addition to specialty family of companies. Heavy Trucks
metals.
410-687-9223
s We provide assembly and packaging services, including
Transportation
stacking, to meet your needs.
WEB s We are not limited to the pr oducts you see in this
catalog! We can custom manufacture to your
Medical
requirements and can match other manufactur ers’
standard designs as well.
Terms: Maryland residents add 6%
Off-Road
We think you will be impr essed with our new catalog! You can or appropriate tax for your district. Machinery
also visit us online at www.mw-ind.com/rolex. We are proud Prices are subject to change without
mw-ind.com/rolex notice; FOB, Baltimore, M D.
of our past, but equally excited about our futur e. Speaking for Outdoor Power
all of us at Rolex Spring, we would like to thank you for your
support and we look forward to serving you! All damage claims must be filed by Equipment
EMAIL consignee within 30 days of receipt.
Retail Products
We accept:
Display Fixtures
Steve Krajewski Telecommunications
rolexspring@mw-ind.com General Manager
3. 09RolexCatalogR3 9/4/09 11:30 AM Page 1
410-391-7400
Fax 410-687-9223
www.mw-ind.com/rolex
TABLE OF CONTENTS
About Rolex Products & Services ...............2-3 NDS Series ..............................................21-22
Standard Springs ............................................3 AK Series Lookup Tables ..............................23
Spring Measurement & Function ....................4 AK Series (MM & KGF) ............................24-25
AM Series Tolerances .....................................5 AK Series (Inches & Pounds) ...................25-26
AM Series (MM & Newtons).........................6-9 Disc Spring Applications .........................27-28
AM Series (Inches & Pounds) ..................10-13 Design Info: Characteristics ..........................29
AI & AK Series Tolerances.............................14 Design Info: Load Calculations .....................30
AI Series...................................................15-16 Design Info: Loading & Fatigue ...............31-32
SP Series.......................................................17 Design Info: Stacks .......................................33
Contact Belleville Springs .............................18 Design Info: Disc Spring Properties..............34
Contact Belleville Springs - Military ..............19 Design Info: Tightening Torque .....................35
FL Series .......................................................20 Request For Quote........................................36
WARRANTY
Maryland Precision Spring Division, the manufactur ers be liable for loss of use of a pur chaser’s equipment or
of ROLEX Precision Disc Springs, sells these products facilities, or for loss of business, goodwill or pr ofits, or
on the condition that the purchaser will make their own for costs of inspection, transportation, storage, or any
determination as to the pr oducts’ suitability for their other incidental damages. Pur chaser must notify
intended use. The pur chaser agr ees to this and Maryland Pr ecision Spring Division in writing of any
accepts all r esponsibility for the use of ROLEX products considered defective within 30 days of r eceipt
Precision Disc Springs. of products.
Maryland Pr ecision Spring Division warrants that Maryland Pr ecision Spring disclaims any and all
ROLEX Springs ar e fr ee fr om defects in material and expressed or implied warranties concer ning ROLEX
workmanship. Our sole obligation for any br each of this Precision Disc Springs including, without limitation,
warranty is the r epair or r eplacement of the pr oduct, at warranty of fitness for a specific purpose and warranty of
our option. Maryland Precision Spring Division shall not merchantability, except the warranty set forth above.
Note: Part numbers and dimensions throughout this ca talog are subject to manufacturer’s change without notice.
Can’t find the part required for your application? No problem! Call Rolex Spring at 410-391-7400
and speak to a Sales Associate regarding our custom manufacturing capabilities.
1
4. 09RolexCatalogR3 9/4/09 11:30 AM Page 2
410-391-7400
Fax 410-687-9223
www.mw-ind.com/rolex
ABOUT ROLEX
MPS/ROLEX SPRING
Manufacturing precision disc springs since 1969.
OUR PRODUCTS
s MPS/Rolex Spring makes Belleville springs and disc s We have complete contr ol over all aspects of the
springs fr om a variety of materials in sizes ranging manufacturing pr ocess. Our plant in Baltimor e, MD
from 1/4" OD to 40" OD. includes tooling, stamping, machining, heat tr eating
and finishing capabilities.
s We stock a number of “catalog” parts or can make
parts to your design specifications. s We have experience making parts fr om many
specialty materials.
s Our pr oducts ar e suitable for obtaining high spring
loads in limited space. s We ar e well suited to supply custom engineer ed
springs for all of your applications.
s We make parts for use with pr etensioning bolted
connections, for shock absorption, for vibration
dampening, for friction devices, for live loading ball OUR SERVICES
bearings, and many other design applications. s Complete design and engineering support.
s Our parts are used in the Aerospace, Transportation, s Fast shipment of product from our extensive catalog
Material Handling, Chemical Pr ocessing Equipment, part inventory.
Mining and Oil Field Equipment, Machine T ool, s Complete manufacturing support for custom parts.
Electrical Connector , V alve and many other
industries. s Stocking programs for “just in time” deliveries.
s Assembly and packaging services, including stacking.
OUR QUALIFICATIONS
s MPS/Rolex Spring is a leader in the design and s Quality control system support including certification,
manufacture of disc springs. W e have a history material traceability, PPAP, etc.
dating back to 1969.
s We wer e the first disc spring manufactur er in the
world to hold an ISO 9001 Quality System
Certification. We currently maintain our registration to We are not limited to manufacturing springs listed in this
ISO 9001:2000. catalog. W e have the knowledge, experience, and
capability to produce springs to fit most any application.
s We employee proprietary computer design programs Please contact our Sales Department for help with your
to evaluate spring parameters to insur e acceptable custom applications.
performance of our products in customer applications.
Can’t find the part required for your application? No problem! Call Rolex Spring at 410-391-7400
and speak to a Sales Associate regarding our custom manufacturing capabilities.
2
5. 09RolexCatalogR3 9/4/09 11:30 AM Page 3
410-391-7400
Fax 410-687-9223
www.mw-ind.com/rolex
ADDITIONAL SERVICES OFFERED BY MPS/ROLEX SPRING
COMPLETE DISC SPRING ASSEMBLIES MADE PRE-STACKED PACKAGED DISC SPRINGS
TO YOUR SPECIFICATIONS OR ASSEMBLED s Pre-stacked. pre-arranged assemblies
TO COMPONENTS SUPPLIED BY YOU s Parallel and series combinations
s Captive disc spring arrangements s Eliminate errors and labor caused
s Guide rods, end restraints by manual stacking
s Springs are stacked at our facility s Easy to handle, quick to install
s Exact positioning and performance
are factory tested on the pr emises
Stack Spring Tension Device
Typical Stack Assembly
STANDARD SPRINGS
Load Damping Spring Assembly Computer Spindle Drive Assembly
Standard Springs
s AM Series are precision springs geared to the metric s FL (inch) and MFL (metric) series flange springs ar e
community and manufactured utilizing DIN 2092 and primarily designed for pipe flange applications. They
DIN 2093 as guidelines. AM series springs ar e are intended to deflect and move with the bolted
designed to meet high performance r equirements of joint in the event of thermal and/or mechanical
dynamic spring applications. They ar e typically shock. Applications include piping construction,
manufactured from High Carbon or Alloy steel; AISI compression joints, steam piping joints, valve and
C1075 or 6150 material. pump connections, and other similar applications.
The FL and MFL series ar e normally manufactur ed
s AI Series springs ar e designed to maintain load from 17/7 PH stainless steel.
tension in light bolted assemblies, wher e a constant
load is r equired. Although this series is primarily s NDS Series flange springs ar e used to fill the
designed for bolted applications, they may also be application needs similar to those described for the
used in dynamic applications as long as the FL and MFL series springs. However , they ar e
application does not exceed the designated str ess primarily designed to handle applications
limits. Like the AM series the AI parts ar e typically demanding much higher load and/or temperatur e.
manufactured from High Carbon or Alloy steel; AISI NDS parts ar e normally made fr om H11/H13 steel
C1075 or 6150 material. and can pr oduce flat loads up to 310,000 pounds
and, under most conditions, can withstand
s SP Series are specifically designed for heavy bolted temperatures up of 1100° F (500° C).
applications such as those r equired for bus bar and
transformer applications. They ar e used wher ever s AK Series springs ar e specifically designed as
there is a need to over come the ef fects of thermal preloading springs for use with radial ball bearings.
expansion and contraction. The SP series ar e They ar e made fr om C1075 material and ar e
normally manufactur ed fr om High Carbon or Alloy intended to maintain the positioning accuracy of the
steel; AISI C1075 or 6150 material. bearing with no endplay and minimize vibration and
shaft deflection. AK series springs ar e intended to
meet both Metric and Inch standar d sizes.
Can’t find the part required for your application? No problem! Call Rolex Spring at 410-391-7400
and speak to a Sales Associate regarding our custom manufacturing capabilities.
3
6. 09RolexCatalogR3 9/4/09 11:30 AM Page 4
410-391-7400
Fax 410-687-9223
www.mw-ind.com/rolex
BASIC INFORMATION FOR MEASUREMENT
AND FUNCTION OF A DISC SPRING
CONICAL SPRING NOMENCLATURE OF A CONICAL SPRING
OD = Outside Diameter
ID = Inside Diameter
t or TH = Thickness
OH = Overall Height
h or d = Cone or Dish Height
3 SPRINGS IN PARALLEL PARALLEL SPRING STACK
Springs in parallel incr ease the potential for ce by the
number of springs being used.
3 springs in parallel = 3 x the for ce of one
If one spring can develop 100 pounds of clamping force, degree of accuracy because friction will cause risers in
3 in parallel can develop 300 pounds of clamping for ce. loads during the compr ession phase and dips in loads
during the r eleasing phase. These ar e caused by a
The potential to develop a high coef ficient of friction surface friction grabbing ef fect that pr events the
exists in a parallel stack due to the friction that is cr ated
e surfaces moving smoothly acr oss each other. The effect
on the surface contacts. Stacks larger than three tend to tends to be pr esent in both the compr ession and
develop a high, unpr edictable, coef ficient of friction. A releasing cycles.
stack lar ger then thr ee can not be pr edicted with any
6 SPRINGS IN SERIES If one spring can develop 100 pounds of clamping for ce
at 75% of its travel height, then 6 (or mor e) springs will
produce the same 100 pounds for ce at 75% of the total
travel distance of the stack.
If a single spring, at .020" travel, is 75% deflection and
develops 100 pounds of for ce, then a series stack of 6
will need to travel 6 times the deflection distance or
.120", 75% of the stack travel height, to pr oduce the
same 100 pounds of force. The formula is:
Stack height = Single spring height x the number of
springs in the stack.
SPRING INFO
Unlike the parallel stack, the coef ficient of friction plays
less a roll in a series stack. However, larger series stacks
made of numbers gr eater than ten, tend to develop an
SERIES SPRING STACK
unpredictable coef ficient of friction ar ound the contact
Springs stacked in series increase the travel of the spring
edges that make it dif ficult to pr edict the accuracy of
by the number of springs in the stack while r etaining the
load points. These tend to be identified as sticking points
potential force of only one across the span of the stack.
and can pr oduce a gripping or popping sound as the
Example: 6 springs in series will allow the springs to stack moves through the compression cycle. Numerous
travel 6 times the distance of a single spring while preventive measures such as lubricants, a lar ger radius
retaining the potential force of only one. or bearing flats may be specified to aid in r educing
these effects.
Can’t find the part required for your application? No problem! Call Rolex Spring at 410-391-7400
and speak to a Sales Associate regarding our custom manufacturing capabilities.
4
7. 09RolexCatalogR3 9/4/09 11:30 AM Page 5
410-391-7400
Fax 410-687-9223
www.mw-ind.com/rolex
AM/SAM SERIES PRECISION SPRING TOLERANCES
The tolerances on this page are for the AM (AISI 1075 or AISI 6150 carbon steel)
and SAM (17/7 PH stainless steel) series parts. THICKNESS (t) TOLERANCE
TOLERANCES
Refer to the “SAM” columns for dimensional and/or tolerance differences Carbon Steel AISI C1075 or AISI 6150
required for ALL 17/7 PH stainless steel parts. AM Series (MM) AM Series (Inches)
Range Tolerance Range Tolerance
ALL stainless steel ma terials will utilize these SAM specifica tions with the
exception of materials not a vailable in the standard tolerance range. In those < 0.70 - 0.025 < 0.0276 ± 0.001
cases, the closest material tolerance will be used. > = 0.70 > = 0.0276
± 0.051 ± 0.002
< 2.25 < 0.088
When requesting parts made of stainless steel, add the letter “S” in front of the > = 2.25 > = 0.088
existing part number . For example, carbon steel part number AM-502520 ± 0.076 ± 0.003
< 3.00 < 0.118
becomes SAM-502520 for stainless steel. > = 3.00 > = 0.118
± 0.102 ± 0.004
< 4.00 < 0.157
For a vailability of other ma terial types and achievable tolerances, please call
> = 4.00 ± 0.127 > = 0.157 ± 0.005
Rolex Sales or Engineering for assistance.
Design Note : stainless steel ma terial thickness is different than steel and is
subject to commercial availability. The overall height will be used to compensate
for the difference in load due to the difference in thickness.
THICKNESS (t) TOLERANCE
17/7 PH Stainless Steel
OUTSIDE & INSIDE DIAMETER TOLERANCE SAM Series (MM) SAM Series (Inches)
Range Tolerance Range Tolerance
AM Series (MM) SAM (MM) AM SERIES (Inches) SAM (Inches)
Carbon Steel Stainless Carbon Steel Stainless < = 0.51 ± 0.05 < = 0.020 ± 0.002
> 0.51 > 0.020
Range Tolerance Tolerance Range Tolerance Tolerance ± 0.08 ± 0.003
< = 1.27 < = 0.050
ID + 0.102 ID + 0.13 ID + 0.004 ID + 0.005 > 1.27 > 0.050
< = 3.0 < = 0.118 ± 0.10 ± 0.004
OD - 0.102 OD - 0.13 OD - 0.004 OD - 0.005 < = 2.34 < = 0.092
> 3.0 ID + 0.127 ID + 0.15 > 0.118 ID + 0.005 ID + 0.006 > 2.34 > 0.092
± 0.13 ± 0.005
< = 6.0 OD - 0.127 OD - 0.15 < = 0.236 OD - 0.005 OD - 0.006 < = 3.18 < = 0.125
> 6.0 ID + 0.152 ID + 0.18 > 0.236 ID + 0.006 ID + 0.007 > 3.18 > 0.125
± 0.20 ± 0.008
< = 10.0 OD - 0.152 OD - 0.18 < = 0.394 OD - 0.006 OD - 0.007 < = 4.95 < = 0.195
> 10.0 ID + 0.178 ID + 0.20 > 0.394 ID + 0.007 ID + 0.008 > 4.95 ± 0.25 > 0.195 ± 0.010
< = 18.0 OD - 0.178 OD - 0.20 < = 0.709 OD - 0.007 OD - 0.008
> 18.0 ID + 0.203 ID + 0.23 > 0.709 ID + 0.008 ID + 0.009
< = 30.0 OD - 0.203 OD - 0.23 < = 1.180 OD - 0.008 OD - 0.009
> 30.0 ID + 0.254 ID + 0.28 > 1.180 ID + 0.010 ID + 0.011
< = 50.0 OD - 0.254 OD - 0.28 < = 1.970 OD - 0.010 OD - 0.011 OPERATION LOAD TOLERANCE
> 50.0 ID + 0.305 ID + 0.33 > 1.970 ID + 0.012 ID + 0.013
< = 80.0 OD - 0.305 OD - 0.33 < = 3.150 OD - 0.012 OD - 0.013 Thickness Range AM SAM
> 80.0 ID + 0.356 ID + 0.38 > 3.150 ID + 0.014 ID + 0.015 MM Inches Series Series
< = 120 OD - 0.356 OD - 0.38 < = 4.720 OD - 0.014 OD - 0.015 + 25.0%
> 120 ID + 0.406 ID + 0.43 > 4.720 ID + 0.016 ID + 0.017 < = 1.25 < = .049 ± 20%
- 7.5%
< = 180 OD - 0.406 OD - 0.43 < = 7.090 OD - 0.016 OD - 0.017 > 1.25 > .049 + 15.0%
ID + 0.457 ID + 0.48 ID + 0.018 ID + 0.019 ± 20%
> 180 > 7.090 < = 3.00 < = .118 - 7.5%
OD - 0.457 OD - 0.48 OD - 0.018 OD - 0.019 > 3.00 > .118 + 10.0%
± 20%
< = 6.00 < = .236 - 5.0%
+ 5.0%
OVERALL HEIGHT TOLERANCE > 6.00 > .236 ± 20%
- 5.0%
AM Series (MM) SAM (MM) AM Series (Inches) SAM (Inches)
by part thickness Stainless by part thickness Stainless
t Range OH Tol. OH Tol. t Range OH Tol. OH Tol.
+ 0.10 + 0.11 + .004 + 0.0045
< = 1.25 < = .049 HARDNESS TOLERANCE
- 0.05 - 0.06 - .002 - 0.0025
> 1.25 + 0.15 + 0.17 > .049 + .006 + 0.0065 AM Series Tolerance SAM
<= 2.00 - 0.08 - 0.09 < = .078 - .003 - 0.0035 Thickness Range Rockwell Stainless
> 2.00 + 0.30 + 0.32 > .078 + .012 + 0.0125
MM Inches HRc HRc
<= 3.00 - 0.10 - 0.11 < = .118 - .004 - 0.0045
> 3.00 + 0.30 + 0.32 > .118 + .012 + 0.0125 < 1.00 < 0.039 46 - 51 Minimum 38
<= 6.00 - 0.15 - 0.17 < = .236 - .006 - 0.0065 > = 1.00 > = 0.039
44 - 49 Minimum 38
+ 0.30 + 0.32 + .012 + 0.0125 < 4.25 < 0.157
> 6.00 > .236 > = 4.25 > = 0.157 42 - 48 Minimum 38
- 0.30 - 0.32 - .012 - 0.0125
5