Four-point contact ball bearings   QJ 3

Bearing number

Dimensions
（mm）

Basic load ratings (KN)

Limiting speed (r/min)

Mass (Kg)

TCB

d

D

B

r min

a

Cr

Cor

Grease

Oil

QJ311

55

120

29

2.0

61

127

108

4500

6000

1.75