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CAT. No.E1254a 2005 E-8 Printed in Japan ©NSK Ltd. 2003

Printed on 100% recycled paper.

1

Introduction

As technologies evolve, all manufacturers share a global responsibility

to respect and protect the environment.

NSK Motion and Control products reflect our corporate commitment to being

environmentally responsible. While our products improve the performance of

machines in a variety of industries, they also save energy and conserve resources

because of our superior precision machining technologies.

In order to meet the needs of the highly specialized machine tool industry,

we have enhanced every and all aspects of our R & D capability at our Technology Centers.

As a result, NSK’s precision bearings are also used in a wide variety of industries,

such as semiconductor production and industrial robots, and have

earned a reputation for excellent performance.

NSK’s purchase of RHP (Europe) allowed us to combine our collective

experience and expertise, and to unify our strengths in design. As a result,

our bearings are known for their exceptional accuracy and reliability.

This catalog explains technical materials including our latest research and

experimental data, various applications, the types of precision bearings available,

and the proper utilization of each specific type of bearing.

32

Table of Contents

Part 1. NSK Super Precision Bearings P4–9

Global Network P4

Research and Development P6

Quality and Production P8

Part 2. Features of Precision Bearings P10–29

Metallurgical Technology to Extend Bearing Life P12

Ceramic Rolling Elements P14

Cages P16

Product Range P18

Performance of Each Bearing Type P20–29

Part 3. Selection of Precision Bearings P30–41

Part 4. Bearing Types P42–117

1. Angular Contact Ball Bearings (ACBB) P42–74

2. Cylindrical Roller Bearings (CRB) P76–85

3. Angular Contact Thrust Ball Bearings P86–95

4. Angular Contact Thrust Ball Bearings for

Ball Screw Support P96–103

5. Precision Deep Groove Ball Bearings P104–109

6. Gauges and Oil-Air Lubricators P110–117

Part 5. Technical Guide P118–175

Part 6. Bearing Handling P176–197

Part 7. Appendices P198–210

SUPER PRECISION BEARINGS

Part 1

NSK’s global network means excellent products andsuperior customer service.

NSK has established a

communication system that

links the major markets of the

world in Europe, Asia, Japan,

and the Americas. We use this

highly developed system to

share information, in real time, related to changes and the

trends of each market. As a result, we can react quickly to

meet changing customer needs to supply the best, high quality

products. Our global network

makes NSK a truly global

company. We are able to

transcend borders and other

restrictions to meet the needs of

our global customers.

PeterleeNewarkMaidenheadCorentryWarsawKielceLeipzigDusseldorfStuttgartMunderkingenParisMilanoTorinoBarcelonaIstanbul

Johannesburg

RecifeBelo HorizonteSao PauloSuzanoJoinvillePorto AlegreBuenos Aires

VancouverMontrealTorontoAnn ArborChicagoBenningtonClarindaIndianapolisFranklinLibertySan JoseLos AngelesAtlantaTroyMiamiMexico City

BeijingShanghaiKunshanGuangzhouAnshunZhangjiagangSuzhouDongguanHong KongChangshuChengduSeoulKumiChangwonTaipeiTaichungChennaiBangkokChachoengsaoChonburiPraiBalakongKuala LumpurJohor BahruSingaporeKota KinabaluManilaJakarta

Tokyo ×45×17×4

PerthAdelaideMelbourneBrisbaneSydneyAuckland

5

Global NetworkNSK’s global network is the key to our ability to develop innovative products that incorporate the latest technologies.

4

The network connects each sales branch, distribution center, production facility, and

technology center and enables us to gather the latest information from each location.

Data is instantly accessible to every part of the network, resulting in products of the

highest quality.

Our global system also includes activities such as receiving and processing orders,

shipping products, and supplying technical support.

No matter how difficult or complex the challenge, NSK is able to respond

immediately.

Headquarters

Sales office

Plant

Technical office

Wherever our customers are in the world, our global support network is there.

Our extensive global network is able to receive orders and

supply products anywhere in the world. NSK’s distributors

cover the world, and keep inventory of all critical products in all

the major markets and locations, making it possible to supply

the products to customers without delay. NSK also provides

technical support globally to help

customers determine the best

bearing for each application and

to respond quickly to any

questions and deal immediately

with any problems our customers

may have.

NSK

Customers

Sales Office

Distributors

CHANCE 2 Internet communication

system

This system allows customers to access information such as inventory, products, pricing, technical information, and also to order our products via the Internet. It is also possible to download CAD data and some programs, such as

a bearing life calculation, via the Internet.

PLANETS

This system connects our Product division, Sales division, and Technical division, so that they can support each other and share information in real time.

Engineering SystemProduction System

Sales System

Sister Plant

Vendors

PLANETSPractical Link by AdvancedNSK E-business Technology System

CHANCE@Convenient Helpful Access environmentfor NSK Communication Exchange@

Information systems connect customers to NSK in real time

http://www.nsk.com

Part 1

7

Research & DevelopmentCommunicating through our global network, the Technology Centers in Europe, The Americasand Japan engage in a continual exchange of ideas, reflecting NSK’s extensive commitment toresearch and development.

6

NSK’s key technology is Tribology (the study of the friction and wear).

By decreasing friction and wear, it is possible to save energy and conserve resources, thus

preventing machine failures and increasing reliability. NSK operates three Technology

Centers located in Europe, the USA and Japan. They concentrate on Tribology as a means

to develop innovative new technologies. Each Technology Center supports the customers

in its region and all three communicate continually via our global network to share new

information and findings.

The Technology Center in Japan acts as a direct support to Asian customers. It is also the

center that systematically gathers information on market needs in Europe, Asia and

the Americas to identify emerging needs and market trends so that NSK can

aggressively develop the next generation of products.

Analysis Technologies

Evaluation Technologies

Material Technologies

Lubrication Technologies

Bearing Technology Center(Japan)

American Technology Center(USA)

European Technology Center(England)

Proposing a new approach to value New technology development

NSK is developing four basic technologies, Analysis,

Materials, Lubrication, and Evaluation. Using these

technologies, NSK produces new products that satisfy the

unique requirements in each application. This approach

provides real value to our customers.

Custom products for unique customer applications

Each Technology Center works closely with our customers to

determine their precise application needs. In doing so we can

help them identify the right NSK product for each application

so they receive maximum efficiency and cost effectiveness.

Upon request, we can also supply completely customized

products to satisfy highly specialized customer needs.

Technology Center customer support

In addition to basic research, each Technology Center

provides technical support to the customers in its region.

As a result of this support, our customers are able to use

NSK’s products in their best condition and achieve their

best performance.

T R I B O L O G Y

Part 1

9

Quality & ProductionWe employ the latest manufacturing technologies and quality control procedures to produceproducts that are recognized as having the highest degree of accuracy in the world.

8

NSK precision bearings deliver the highest level of quality because of our production capability, state of the art

equipment, extensive manufacturing expertise, and our commitment to applying the same rigorous quality control

procedures at every stage of the production process in every NSK facility.

Global production in England and Japan

NSK’s precision bearings are made in both England and

Japan. The combined expertise of these manufacturing

facilities, and their global locations allow us to meet every

customer need.

Complete quality control and environmental responsibility

As an ISO 9001 certified company,

every NSK manufacturing facility

adheres to the same strict

standards for quality control.

Frequent quality checks are one

part of the production process to

ensure that all our products

maintain the same high level

of quality.

Our company has also received

ISO 14001 Certification and all our

facilities operate to the highest

level of environmental

responsibility.

NSK’s symbol

NSK’s golden box is

your assurance of

the absolute highest

level of quality.

Manufacturing technologies toproduce high accuracy products

To maintain our reputation for

manufacturing precision bearings

with the highest degree of

accuracy in the world, all

precision bearings are checked

nanometer accuracy.

NSK Fujisawa PlantNSK Newark Plant

ISO 14001 Certification

Machining Process (Fujisawa Plant)

Inspection Process (Fujisawa Plant)

Bearing Production (Newark Plant)

Newark Plant

F U T U R E P R O D U C T S

ISO 9001 Certification

Courtesy of NASDA(National Space Development Agency of Japan)