Basic size of mm

d	45
D	85
B	19

The basic rated load is kN

trends C	37.7
static state Co	28

Fatigue load limit Pu	1.2

Rated rotation speed is r/min

Refer to the speed	9000
limit speed	9000

Mass kg	0.43

Model number ¹⁾

General distribution bearings	7209BECBY
Basic design bearings	7209BEY

Dimensions are mm

d	45
d1 ～	60.9
d2 ～	52.7
D1 ～	70.2
r1,2 min	1.1
r3,4 min	0.6
a	37

Shoulder gear and chamfer size mm

da min	52
Da max	78
db max	80.8
ra max	1
rb max	0.6