ROBUST Series was developed using NSK’s material,evaluation, and analysis technologies to improve theperformance of machine tools.

High-SpeedPrecision BearingsROBUST Series

NSK Ltd. has a basic policy not to export any products or technology designated as controlled items by export-related laws. When exporting the products in this brochure,the laws of the exporting country must be observed. Specifications are subject to change without notice and without any obligation on the part of the manufacturer. Everycare has been taken to ensure the accuracy of the data contained in this brochure, but no liability can be accepted for any loss or damage suffered through errors oromissions. We will gratefully acknowledge any additions or corrections.

NSK Ltd.-Headquarters, Tokyo, Japan www.nsk.comASIA BUSINESS STRATEGIC DIVISION-HEADQUARTERS tel: 03-3779-7145INDUSTRIAL MACHINERY BEARINGS DIVISION-HEADQUARTERS tel: 03-3779-7227AUTOMOTIVE DIVISION-HEADQUARTERS tel: 03-3779-7189NEEDLE ROLLER BEARINGS STRATEGIC tel: 03-3779-7121DIVISION-HEADQUARTERSPRECISION MACHINERY & PARTS tel: 03-3779-7219DIVISION-HEADQUARTERSAfricaSouth Africa:NSK South Africa (Pty) Ltd.Johannesburg tel: 011-458-3600Asia and OceaniaAustralia:NSK Australia Pty. Ltd. www.nskaustralia.com.auMelbourne tel: 03-9764-8302China:NSK Hong Kong Ltd.Hong Kong tel: 2739-9933Kunshan NSK Co., Ltd.Kunshan Plant tel: 0512-5771-5654Guizhou HS NSK Bearings Co., Ltd.Anshun Plant tel: 0853-3521505NSK Steering Systems Dongguan Co., Ltd.Dongguan Plant tel: 0769-242-7230Zhangjiagang NSK Precision Machinery Co., Ltd.Jiangsu Plant tel: 0512-5867-6496Timken-NSK Bearings (Suzhou) Co., Ltd.Jiangsu Plant tel: 0512-6665-5666NSK China Technology CenterJiangsu tel: 0512-5771-5654NSK (Shanghai) Trading Co., Ltd.Shanghai tel: 021-6235-0198NSK Representative Offices www.nsk.com.cnBeijing tel: 010-6590-8161Shanghai tel: 021-6235-0198Guangzhou tel: 020-8732-0583Anshun tel: 0853-3522522Chengdu tel: 028-8661-4200NSK (China) Investment Co., Ltd.Shanghai tel: 021-6235-0198India:Rane NSK Steering Systems Ltd.Chennai Plant tel: 04114-266002, 265313, 265363, 265365NSK Ltd. India Blanch OfficeChennai tel: 044-2433-4732, 044-2434-3036, 3067Indonesia:PT. NSK Bearings Manufacturing IndonesiaJakarta Plant tel: 021-898-0155PT. NSK IndonesiaJakarta tel: 021-252-3458

Korea:NSK Korea Co., Ltd. www.kr.nsk.comSeoul tel: 02-3287-0300Changwon Plant tel: 055-287-6001Malaysia:NSK Bearings (Malaysia) Sdn. Bhd.Kuala Lumpur tel: 03-77223373NSK Micro Precision (M) Sdn. Bhd.Malaysia Plant tel: 03-8961-6288New Zealand:NSK New Zealand Ltd. www.nsk-rhp.co.nzAuckland tel: 09-276-4992Philippines:NSK Representative OfficeManila tel: 02-759-6246Singapore:NSK International (Singapore) Pte Ltd.Singapore tel: 65-6273-0357NSK Singapore (Pte) Ltd.Singapore tel: 65-6278-1711Taiwan:Taiwan NSK Precision Co., Ltd.Taipei tel: 02-2591-0656Thailand:NSK Bearings (Thailand) Co., Ltd.Bangkok tel: 02-6412-150~58NSK Bearings Manufacturing (Thailand) Co., Ltd.Chonburi Plant tel: 038-454010~454016SIAM NSK Steering Systems Co., Ltd.Chachoengsao Plant tel: 038-522-343~350NSK Asia PacificTechnology Center (Thailand) Co., Ltd.Chonburi tel: 038-454631~454633EuropeNSK Europe Ltd. (European Headquarters) www.eu.nsk.comMaidenhead, U.K. tel: 01628-509800France:NSK France SASParis tel: 01-30-57-39-39Germany:NSK Deutschland GmbHDüsseldorf tel: 02102-481-0NSK Precision Europe GmbHDüsseldorf tel: 02102-481-0NSK Steering Systems Europe Ltd.Stuttgart tel: 0771-79082-277Neuweg Fertigung GmbHMunderkingen tel: 07393-540Italy:NSK Italia S.P.A.Milano tel: 02-995-19-1Industria Cuscinetti SPATorino Plant tel: 0119824811

Worldwide Sales OfficesNetherlands:NSK European Distribution Centre B.V.Tilburg tel: 013-4647647Poland:NSK Europe Ltd. Warsaw Liaison OfficeWarsaw Liaison tel: 022-645-1525, 1526NSK Iskra S.A.Kielce tel: 041-366-5001NSK European Technology Center, Poland OfficeKielce tel: 041-366-5812Spain:NSK Spain S.A.Barcelona tel: 093-575-4041Turkey:NSK Bearings Middle East Trading Co., Ltd.Istanbul tel: 0216-442-7106United Kingdom:NSK Bearings Europe Ltd.Peterlee Plant tel: 0191-586-6111NSK European Technology CentreNewark tel: 01636-605123NSK UK Ltd.Newark tel: 01636-605123NSK Steering Systems Europe Ltd.Coventry tel: 024-76-588588North and South AmericaNSK Americas, Inc. (American Headquarters)Ann Arbor, Michigan, U.S.A. tel: 734-913-7500Argentina:NSK Argentina SRLBuenos Aires tel: 11-4704-5100Brazil:NSK Brasil Ltda. www.br.nsk.comSão Paulo tel: 011-3269-4723Canada:NSK Canada Inc. www.ca.nsk.comToronto tel: 905-890-0740Mexico:NSK Rodamientos Mexicana, S.A. de C.V. www.mx.nsk.comMexico City tel: 55-301-2741, 55-301-3115, 55-301-4762United States of America:NSK Corporation www.nsk-corp.comAnn Arbor tel: 734-913-7500

Sales Offices:Ann Arbor, Michigan tel: 734-913-7500Cerritos tel: 562-926-2975

NSK American Technology CenterAnn Arbor tel: 734-913-7500NSK Precision America, Inc. www.npa.nsk.comChicago tel: 630-620-8500NSK Steering Systems America, Inc. www.nastech.nsk.comBennington, Vermont tel: 802-442-5448NSK Latin America Inc. www.latinamerica.nsk.comMiami tel: 305-477-0605

CAT. No.E1257 2004 C-10 Printed in Japan ©NSK Ltd. 2004

For more information about NSK products, please contact:

Printed on 100% recycled paper.

Building on the new technologies oftoday to meet the requirements of tomorrow

NSK continually develops and provides

new products and solutions for customers.

In 1998, the ROBUST Series was developed.

During the last JIMTOF 2002,

NSK emphasized the themes of “Environmentally Sound,”

“Easy Handling,” and “Economy.”

Now the themes for the future are “Fast,” “Friendly,” “Firm,” and “Fine.”

NSK contributes to the machine tool industry

by providing new and continuously improved products.

2003— Ball Screw Support Angular Contact Thrust Ball Bearings with Seal Angular Contact Ball Bearings with Seal

2002— Grease Replenishing System High-Rigidity, Double-Row Cylindrical Roller Bearings with TB Cage

2001— High Accuracy Cylindrical Roller Bearings

2000— ROBUST Ultra High-Speed Cylindrical Roller Bearings with PEEK Cage

1999— ROBUST High Accuracy Angular Contact Ball Bearings

1998— ROBUST Ultra High-Speed Angular Contact Ball Bearings

1997— SHX material

21

Angular Contact Ball Bearings Cylindrical Roller Bearings

BNR18˚

BER25˚

BAR30˚

Ultra High-Speed AngularContact Ball BearingsContact angle: 18 degrees

High-Speed AngularContact Thrust Ball BearingsContact angle: 40 degrees

Ultra High-Speed AngularContact Ball BearingsContact angle: 25 degrees

High-Speed AngularContact Thrust Ball BearingsContact angle: 30 degrees

Ultra High Precision AngularContact Ball BearingsContact angle: 15 degrees

Angular Contact Thrust BallBearings for Ball Screw SupportContact angle: 60 degrees

Limiting dmn of each cagePolyamide 46 (TYN) 1,400,000Phenolic (T) 2,800,000PEEK (T42) 3,500,000dmn: “Pitch circle diameter ofrolling elements (mm) “x” Speed (min-1)”

BTR40˚

BGR15˚

TAC60˚

N10

NN

Ultra High-Speed, Single-RowCylindrical Roller BearingsN10 series

High-Rigidity, Double-RowCylindrical Roller BearingsNN30 series

ROBUST Series

43

ROBUST SeriesContinuous Improvement

The ROBUST Series was developed using NSK’s material, evaluation, andanalysis technologies. These technologies and the ROBUST Series are being

continuously improved to deliver the highest quality and performance.

● RingsSHXSUJ2

● Rolling elementsCeramicsSUJ2

● CagePolyamidePhenolicPEEK

Ceramic rolling elementTaking advantage of ceramicsmaterial properties to improvethe performance and thereliability of bearings

SHX SteelSuitable for ultra high-speed operation, andextends fatigue life

Angular Contact Ball Bearings

High-strength cages for CylindricalRoller BearingsBy adopting an engineered polymer andutilizing FEM analysis in design,NSK has developed an extremelyhigh strength cage.

Cages for AngularContact Ball BearingsTYN Cage—Optimumperformance with greaselubrication, with silentoperationT Cage—Optimum bearingperformance and reliabilityat high-speed operation

Type Rings

SUJ2

SUJ2

SHX

Rollingelements

SUJ2

Ceramics

Ceramics

Cage

Polyamide 46 (TYN)Phenolic (T)PEEK (T42)

● RingsSHXSUJ2

● Rolling elementsCeramicsSUJ2

● CagePEEK (Single row)PPS (Double row)

Cylindrical Roller BearingsCore Technology

MaterialTechnology

MaterialTechnology

MaterialTechnology

MaterialTechnology

MaterialTechnology

MaterialTechnology

MaterialTechnology

MaterialTechnology

MaterialTechnology

MaterialTechnology

EvaluationTechnologyEvaluationTechnologyEvaluationTechnologyEvaluationTechnologyEvaluationTechnologyEvaluationTechnologyEvaluationTechnologyEvaluationTechnologyEvaluationTechnology

AnalysisTechnology

AnalysisTechnology

AnalysisTechnology

AnalysisTechnology

AnalysisTechnology

AnalysisTechnology

AnalysisTechnology

AnalysisTechnology

AnalysisTechnology

EvaluationTechnology

AnalysisTechnology

Type Rings

SUJ2

SHX

SHX

SUJ2

Rollingelements

SUJ2

SHX

Ceramics

SUJ2

Cage

PEEK (TP)

PPS (TB)

0.50

1.00

1.50

2.00

2.50

3.00

3.50dmn (×106)

#40 ~ 37 000 min-1

#30 ~ 60 000 min-1

#50 ~ 18 000 min-1

#40 ~ 25 000 min-1

#30 ~ 40 000 min-1

✽ Assuming #50 taper—Bearing Bore = 100 mm, #40 taper—Bearing Bore = 70 mm, #30 taper—Bearing Bore = 40 mm

Angular Contact Ball Bearingswith spring preload

Angular Contact Ball Bearingswith position preload

Cylindrical RollerBearings

X

H

S

XE

X

S

XE

XEX

H

S

XE

RXH

RX

RS

X

S

H H

BNR BER N10 ISO standard 70A5

BNR18˚ S H X

S H XBER25˚

65

Higher speed with silent operation Spin-Shot II provides spindles with the capabilityof both silent operation and higher speed underoptimised lubrication conditions. Spin-Shot II can maintain excellent performanceeven when the conventional air supply is reducedby 1/3.

Molding die machiningAerospace components machining

Typical application

Low temperature rise designed for higherspeed operationROBUST Angular Contact Ball Bearings haveachieved low temperature rise during high-speedoperation through optimised design.

Achieved 3.0M dmnROBUST Cylindrical Roller Bearings simplify thestructure of the spindle and also achieve 3.0M dmn:twice the current speed.

Ultra High-Speed Angular Contact Ball Bearings Spin-Shot II

RS RXN10

RXH

Ultra High-Speed Angular Contact Ball Bearings

Bearing Selection Guide

Typical spindle structure with oil-air lubrication forultra high-speed machining centers

Ultra High-Speed Cylindrical Roller Bearings

BNR18˚ XE

BER25˚ XE

Oil inlet

Bearing type based on preload method and rotational speed

Bearings for ultra high-speed machining centerswith oil-air lubrication

Angular Contact Ball Bearings with TYNCage, suited for grease lubrication; sealenables longer grease life.TYN cage (ball guided, engineered polymer) suitablefor grease lubrication, seal enables longer grease life.Bore dia: 30 mm – 100 mm

87

Higher speed with silent operation This system feeds a small amount of grease tothe bearing at regular intervals, enabling

speeds up to 1.8M dmn with position preload.The Grease Replenishing System enables longergrease life, consumes less air, and is quieter relative toan oil-air system. MTE grease developed by NSK is used in the system.MTS and MTE grease provide the best performance fornormal grease lubrication.

NSK GreaseMTE: for high-speed and heavy loadMTS: for ultra high-speed

BNR18˚ S H X

S H XBER25˚

From NSK—“Low Heat Generation CylindricalRoller Bearings”By reducing the number of rollers by half (Z spec.), thisspecification of Cylindrical Roller Bearings is well-suited for the rear side of a spindle with a built-inmotor. This new idea provides longer grease life.

Grease Replenishing System

RS RXN10NN

RXH

High-Speed Angular Contact Ball Bearings(Photo: Angular Contact Ball Bearings with Seal)

High-Speed Cylindrical Roller Bearings (Photo: Z specification)

Grease inletand outlet

0.00

0.50

1.00

1.50

2.00

2.50

X

H

X

H

S

X

H

S

H

SRXH

RX

RS

NN

X

S

#40 ~20 000 min-1

#30 ~33 000 min-1

#50 ~10 000 min-1

#40 ~14 000 min-1

#30 ~22 000 min-1

BNR BER N10 NN30Grease Replenishing Systemdmn (×106)

✽ Assuming #50 taper—Bearing Bore = 100 mm, #40 taper—Bearing Bore = 70 mm, #30 taper—Bearing Bore = 40 mm

Angular Contact Ball Bearingswith spring preload

Angular Contact Ball Bearingswith position preload

Cylindrical RollerBearings

ISO standard 70A5

Bearing Selection GuideBearing type based on preload method and rotational speed

7

Bearings for high-speed machining centers withgrease lubrication

Molding die machiningAutomotive parts machining

Typical application

Typical spindle structure with grease lubrication forhigh-speed machining centers.

109

High speed and high rigiditywith long grease lifeROBUST Cylindrical Roller Bearingswith TB cage, made with the finestmaterials and optimised design, aresuitable for lathes, and provide high-speed and high rigidity.

BAR30˚ S H

S HBTR40˚

Low heat generation, high rigidity, and highaccuracyLow heat generation and high rigidity increase thereliability of the spindle.

High-Rigidity, Double-Row Cylindrical Roller Bearings

High-Speed Angular Contact Thrust Ball Bearings

InterchangeabilityBAR and BTR type bearingsare special-width designs andtherefore can be used toreplace the TAC20X type. Thisenables the customer to usethese new-type bearings bysimply replacing spacer A withspacer B (see left diagram),without modifying the housingor the shaft.

Spacer A

Spacer B

NN

0.00

0.65

0.75

0.85

0.95

S H

HS

S

H

BER NN30

Rigidity of the main shaft with position preload

BAR BTRdmn (×106)

Bearing Selection GuideBearing type based on rotational speed

High-Speed, High-Rigidity, and High-AccuracyBearings for Lathes

Typical spindle structure for lathes

E44 symbol: standard oil holesand grooves on O.D.

1211

Direction of oil supply

Contact seals onboth sides to avoid

contamination

Waterproof grease

Design optimised to producehigh rigidity bearing for specialapplicationsThis bearing design has beenimproved to meet the requirements ofthis application. Using long life andhigh reliability material, fatigue life hasbeen extended, and by increasing thenumber of the balls, the rigidity of thisbearing has been increased.

✽ Different colored seal on each side to identify bearing orientation

TAC60˚

Ball Screw Support Angular Contact Thrust Ball Bearings

Easy handling andincreased reliability

Superior seal design for typical ballscrew applications increases thereliability of the bearings and providesfor easy handling. Universalcombination of this bearing providesextra flexibility.

Ball Screw Support Angular Contact Thrust Ball Bearings, with seal

TAC60˚

Ultra high-speed and accuracyprovided by special design featuresIn order to meet the ultra high-speedcapability and high running accuracyrequired in bearings for internal grinders,this series has the following features.- Accuracy class: ISO Class 2- Inner ring counter-bore design allows formore efficient oil delivery to the bearingThese universal combination bearings canbe used in any combination.

BGR15˚ S H X

Ultra High-Accuracy Angular Contact Ball Bearings

1.30

1.60

1.90

2.20

2.50

2.80

3.10

Oil-air lub Grease lub

X

X

H

H

S

S

BGR

springpreload

dmn (×106)

Bearing type based on lubrication methodand rotational speed

Bearing Selection Guide

Non-separable type

Ultra High-Speed Bearings for Internal GrindersBall Screw Support Bearings

Typical spindle structurefor internal grinder

P5 P4 P3 P2 P2X

Running accuracy

F u n c t i o n for each application

Special high accuracy class: P2XThe lowest radial runout

F u n c t i o n for each application

Universal combination: SU (Single Universal)Universal combination bearing can be used for any arrangementof DB, DT, DF , DBD, DBB

UNIVERSALUNIVERSALFace-to-Face Arrangement

(DF)

Tandem Arrangement(DT)

3-Row Arrangement(DBD)

4-RowArrangement

(DBB)

Single Universal Combination(SU)

Back-to-BackArrangement

(DB)

NSK accuracy

DimensionalaccuracyRunningaccuracy

P5

ISOCLASS 5

ISOCLASS 4 ISO CLASS 2

P4 P3 P2 P2X

1413

SUPER PRECISION BEARINGS Catalog

For further details, please request this catalog from NSK.

Part 1. NSK Super Precision Bearings

Global Network

Research and Development

Quality Control and ManufacturingTechnology

Part 2. Features of Precision Bearings

Metallurgical Technology to ExtendBearing Life

Ceramic Rolling Elements

Cages

Product Range

Performance of Each Bearing Type

Part 3. Selection of Precision Bearings

Part 4. Bearing Types

Angular Contact Ball Bearings (ACBB)

Cylindrical Roller Bearings (CRB)

Angular Contact Thrust Ball Bearings

Angular Contact Thrust Ball Bearings for BallScrew Support

Precision Deep Groove Ball Bearings

Gauges and Oil-Air Lubricators

Part 5. Technical Guide

Part 6. Bearing Handling

Part 7. Appendices

Catalog No. E1254

ISO CLASS 4

ISO CLASS 2

ISO CLASS 2

Higher thanISO CLASS 2

NSK Ltd. has a basic policy not to export any products or technology designated as controlled items by export-related laws. When exporting the products in this brochure,the laws of the exporting country must be observed. Specifications are subject to change without notice and without any obligation on the part of the manufacturer. Everycare has been taken to ensure the accuracy of the data contained in this brochure, but no liability can be accepted for any loss or damage suffered through errors oromissions. We will gratefully acknowledge any additions or corrections.

NSK Ltd.-Headquarters, Tokyo, Japan www.nsk.comASIA BUSINESS STRATEGIC DIVISION-HEADQUARTERS tel: 03-3779-7145INDUSTRIAL MACHINERY BEARINGS DIVISION-HEADQUARTERS tel: 03-3779-7227AUTOMOTIVE DIVISION-HEADQUARTERS tel: 03-3779-7189NEEDLE ROLLER BEARINGS STRATEGIC tel: 03-3779-7121DIVISION-HEADQUARTERSPRECISION MACHINERY & PARTS tel: 03-3779-7219DIVISION-HEADQUARTERSAfricaSouth Africa:NSK South Africa (Pty) Ltd.Johannesburg tel: 011-458-3600Asia and OceaniaAustralia:NSK Australia Pty. Ltd. www.nskaustralia.com.auMelbourne tel: 03-9764-8302China:NSK Hong Kong Ltd.Hong Kong tel: 2739-9933Kunshan NSK Co., Ltd.Kunshan Plant tel: 0512-5771-5654Guizhou HS NSK Bearings Co., Ltd.Anshun Plant tel: 0853-3521505NSK Steering Systems Dongguan Co., Ltd.Dongguan Plant tel: 0769-242-7230Zhangjiagang NSK Precision Machinery Co., Ltd.Jiangsu Plant tel: 0512-5867-6496Timken-NSK Bearings (Suzhou) Co., Ltd.Jiangsu Plant tel: 0512-6665-5666NSK China Technology CenterJiangsu tel: 0512-5771-5654NSK (Shanghai) Trading Co., Ltd.Shanghai tel: 021-6235-0198NSK Representative Offices www.nsk.com.cnBeijing tel: 010-6590-8161Shanghai tel: 021-6235-0198Guangzhou tel: 020-8732-0583Anshun tel: 0853-3522522Chengdu tel: 028-8661-4200NSK (China) Investment Co., Ltd.Shanghai tel: 021-6235-0198India:Rane NSK Steering Systems Ltd.Chennai Plant tel: 04114-266002, 265313, 265363, 265365NSK Ltd. India Blanch OfficeChennai tel: 044-2433-4732, 044-2434-3036, 3067Indonesia:PT. NSK Bearings Manufacturing IndonesiaJakarta Plant tel: 021-898-0155PT. NSK IndonesiaJakarta tel: 021-252-3458

Korea:NSK Korea Co., Ltd. www.kr.nsk.comSeoul tel: 02-3287-0300Changwon Plant tel: 055-287-6001Malaysia:NSK Bearings (Malaysia) Sdn. Bhd.Kuala Lumpur tel: 03-77223373NSK Micro Precision (M) Sdn. Bhd.Malaysia Plant tel: 03-8961-6288New Zealand:NSK New Zealand Ltd. www.nsk-rhp.co.nzAuckland tel: 09-276-4992Philippines:NSK Representative OfficeManila tel: 02-759-6246Singapore:NSK International (Singapore) Pte Ltd.Singapore tel: 65-6273-0357NSK Singapore (Pte) Ltd.Singapore tel: 65-6278-1711Taiwan:Taiwan NSK Precision Co., Ltd.Taipei tel: 02-2591-0656Thailand:NSK Bearings (Thailand) Co., Ltd.Bangkok tel: 02-6412-150~58NSK Bearings Manufacturing (Thailand) Co., Ltd.Chonburi Plant tel: 038-454010~454016SIAM NSK Steering Systems Co., Ltd.Chachoengsao Plant tel: 038-522-343~350NSK Asia PacificTechnology Center (Thailand) Co., Ltd.Chonburi tel: 038-454631~454633EuropeNSK Europe Ltd. (European Headquarters) www.eu.nsk.comMaidenhead, U.K. tel: 01628-509800France:NSK France SASParis tel: 01-30-57-39-39Germany:NSK Deutschland GmbHDüsseldorf tel: 02102-481-0NSK Precision Europe GmbHDüsseldorf tel: 02102-481-0NSK Steering Systems Europe Ltd.Stuttgart tel: 0771-79082-277Neuweg Fertigung GmbHMunderkingen tel: 07393-540Italy:NSK Italia S.P.A.Milano tel: 02-995-19-1Industria Cuscinetti SPATorino Plant tel: 0119824811

Worldwide Sales OfficesNetherlands:NSK European Distribution Centre B.V.Tilburg tel: 013-4647647Poland:NSK Europe Ltd. Warsaw Liaison OfficeWarsaw Liaison tel: 022-645-1525, 1526NSK Iskra S.A.Kielce tel: 041-366-5001NSK European Technology Center, Poland OfficeKielce tel: 041-366-5812Spain:NSK Spain S.A.Barcelona tel: 093-575-4041Turkey:NSK Bearings Middle East Trading Co., Ltd.Istanbul tel: 0216-442-7106United Kingdom:NSK Bearings Europe Ltd.Peterlee Plant tel: 0191-586-6111NSK European Technology CentreNewark tel: 01636-605123NSK UK Ltd.Newark tel: 01636-605123NSK Steering Systems Europe Ltd.Coventry tel: 024-76-588588North and South AmericaNSK Americas, Inc. (American Headquarters)Ann Arbor, Michigan, U.S.A. tel: 734-913-7500Argentina:NSK Argentina SRLBuenos Aires tel: 11-4704-5100Brazil:NSK Brasil Ltda. www.br.nsk.comSão Paulo tel: 011-3269-4723Canada:NSK Canada Inc. www.ca.nsk.comToronto tel: 905-890-0740Mexico:NSK Rodamientos Mexicana, S.A. de C.V. www.mx.nsk.comMexico City tel: 55-301-2741, 55-301-3115, 55-301-4762United States of America:NSK Corporation www.nsk-corp.comAnn Arbor tel: 734-913-7500

Sales Offices:Ann Arbor, Michigan tel: 734-913-7500Cerritos tel: 562-926-2975

NSK American Technology CenterAnn Arbor tel: 734-913-7500NSK Precision America, Inc. www.npa.nsk.comChicago tel: 630-620-8500NSK Steering Systems America, Inc. www.nastech.nsk.comBennington, Vermont tel: 802-442-5448NSK Latin America Inc. www.latinamerica.nsk.comMiami tel: 305-477-0605

CAT. No.E1257 2004 C-10 Printed in Japan ©NSK Ltd. 2004

For more information about NSK products, please contact:

Printed on 100% recycled paper.