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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