Basic size of mm

d	40
D	85
B	19

The basic rated load is kN

trends C	22.9
static state Co	7.8

Fatigue load limit Pu	0.4

Rated rotation speed is r/min

Refer to the speed	17000
limit speed	11000

Mass bearing + tightening sleeve	0.68

model

bearing	1209EKTN9
tapered adapter-sleeve	H209

Dimensions are mm

d1	40
d3	65
D1 ～	73.7
B1	33
B2	11
r1,2 min	1.1

Shoulder gear and chamfer size mm

Da max	57
db min	48
Da max	78
Ba min	6
ra max	1

Calculation coefficient

e	0.21
Y1	3
Y2	4.6
Y0	3.2