Basic size of mm

d1	40
D	100
B	25

The basic rated load is kN

trends C	125
static state Co	127

Fatigue load limit Pu	13.7

Rated rotation speed is r/min

Refer to the speed	6300
limit speed	8500

Mass bearing + tightening sleeve	1.2

model

bearing	*21309EK
tapered adapter-sleeve	H309

Dimensions are mm

d1	40
d2 ～	65.3
d3	65
D1 ～	88
B1	39
B2	11
b	5.5
k	3
r1,2 min	1.5

Shoulder gear and chamfer size mm

da max	65
db min	50
Da max	91
Ba min	5
ra max	1.5

Calculation coefficient

e	0.24
Y1	2.8
Y2	4.2
Yo	2.8