Basic size of mm

d	105
D	190
B	36

The basic rated load is kN

trends C	148
static state Co	137

Fatigue load limit Pu	4.8

Rated rotation speed is r/min

Refer to the speed	3800
limit speed	3800

Mass kg	3.82

Model number ¹⁾

General distribution bearings	7221BECBP
Basic design bearings	7221BEP

Dimensions are mm

d	105
d1 ～	138
d2 ～	121.2
D1 ～	159.1
r1,2 min	2.1
r3,4 min	1.1
a	80

Shoulder gear and chamfer size mm

da min	117
Da max	178
db max	183
ra max	2
rb max	1