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BALL & ROLLER BEARINGS

ISO 9001/QS-9000Certificate No. 927265

koyo轴承样本

Copyright KOYO 1997

The contents of this catalogue are the copyright of KOYO and

may not be reproduced unless permission is granted.

Cares have been taken in every aspect to ensure the correctness

of the data contained in this catalogue but no liability can be

accepted for any mistakes or omissions.

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¡Technical section

1. Structures and types 2. Internal clearance 3. Bearing numbers 4. Handling of bearings

¡Bearing specification tables

Deep groove ball bearings d 3– 200 mm

Angular contact ball bearings d 10– 200 mm

Self-aligning ball bearings d 10– 100 mm

Cylindrical roller bearings

d 20– 200 mm

Tapered roller bearings

d 15– 200 mm

Spherical roller bearings

d 25– 300 mm

Thrust ball bearings

d 10– 200 mm

Spherical thrust roller bearings d 60– 300 mm

Ball bearing units

d 10– 140 mm

Locknuts and lockwashers

¡Supplementary tables¡Products information

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BALL & ROLLER

BEARINGSPOPULAR SIZE

CAT.NO.203E-1

¡VALUE & TECHNOLOGY

koyo轴承样本

¡

Standard ball and roller bearings

¡

Ball bearing units

¡

Locknuts¡

Lockwashers

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Introduction

This catalogue is prepared to show most popular ball and roller

bearings used in various applications.These bearings are generally

available from stock.

As the technical information mentioned in this catalogue is limited,

when more detailed information is required for new design of applica-tion, it is recommended that the KOYO General Catalogue is referred.For trouble free operation of the application, it is recommended to

keep the bearings in proper condition avoiding from extreme high or

low temperature, wet, contamination, hitting, dropping, etc..

Also proper handling and maintenance are required at mounting,

regular inspection, overhaul, and dismounting by the use of suitable

tools, jigs and lubricant.

*For improvements, as well as other reasons, the contents of this

catalogue are subject to change without prior notice.

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Contents

1.Rolling bearing structures and types........................................A1

2.Bearing internal clearance ..........................................................A11

3.Bearing numbers .........................................................................A21

4.Handling of bearings ...................................................................A22

Deep groove ball bearings

Angular contact ball bearings

Self-aligning ball bearings

Cylindrical roller bearings

Taperedroller bearings

Spherical roller bearings

Thrust ball bearings

Spherical thrust roller bearings

Ball bearing unitsd 3 – 200 mm .......................B2d 10 – 200 mm ......................B16d 10 – 100 mm ......................B34d 20 – 200 mm ......................B42d 15 – 200 mm ......................B50d 25 – 300 mm ......................B70d 10 – 200 mm ......................B88d 60 – 300 mm ......................B94d 10 – 140 mm ......................B98Locknuts and lockwashers ..............................................................B 132.................................................C 1

.................................................D 1

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Bearings are classified as follows, by the

number of rows of rolling elements:single-

row, double-row, or multi-row (triple- or four-

row) bearings.

Outer ring

Ball

Inner ring

Cage

CageCupRollerConeDw, Dw >5 mm)1)Dw, Dw≤5 mm)1)Note 1) Lw:roller length Dw:roller diameter(mm)(mm)3) CageThe cage guides the rolling elementsalong the bearing rings, retaining the rollingelements in correct relative position.There are various types of cages includingpressed, machined, molded, and pin typecages.Due to lower friction resistance than that

found in full complement roller and ball bear-

ings, bearings with a cage are more suitable

for use under high speed rotation.

Deep groove ball bearingTapered roller bearing1-2 Type

The contact angle (α) is the angle formed

by the direction of the load applied to the

bearing rings and rolling elements, and a

plan perpendicular to the shaft center, when

the bearing is loaded.

Shaft washerBallHousing washerCage

Thrust ball bearing

Note) In thrust bearings inner and outer rings and also called

"shaft washer" and "housing washer" respectively; in

tapered roller bearings, the respective forms are "cone"

and "cup."

Fig. 1-1 Bearing structureBearings are classified into two types in

accordance with the contact angle (α).

Radial bearings (0 ≤α ≤45 )

...designed to accommodate

mainly radial load.

Thrust bearings (45 < α ≤90 )

...designed to accommodate

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