Basic size of mm

d	140
D	250
B	42

The basic rated load is kN

trends C	199
static state Co	212

Fatigue load limit Pu	6.4

Rated rotation speed is r/min

Refer to the speed	2800
limit speed	3000

Mass kg	8.63

Model number ¹⁾

General distribution bearings	7228BCBM
Basic design bearings	7228BM

Dimensions are mm

d	140
d1 ～	183.3
d2 ～	163.6
D1 ～	209.5
r1,2 min	3
r3,4 min	1.1
a	103

Shoulder gear and chamfer size mm

da min	154
Da max	236
db max	243
ra max	2.5
rb max	1