BEARING DESIGNATION SYSTEM

Prefix - Basic Designation – Suffix

BASIC DESIGNATION

BASIC DESIGNATION SHOWS:

• Product type

• Standard design

• Bore size

SUPPLEMENTARY DESIGNATION

• Special Variants

• Bearing components

Bearing Designation

Prod. type

Pre-fix

See pg.151

Suffix

See pg. 150,151

Width or height series

Outside Diameter series

Bore size

Bearing Designation

Bearing type

Ball Brg.

Roller Brg.Single row/ Dir.

Double row/ Dir.

Angular contact 7 0 xSelf aligning x 1 xSpherical x x

2Thrust 5Taper x x 3Deep groove 6 4 xCylindrical x x NCyl. _____ Thrust x x 8Needle x x NAFour pt. cont. QJ x x

Bore size

Groups

1. < 10mm.

2. 10mm – 17mm.

3. 20mm. – 480mm.

4. >= 500mm.

Group - 1