Basic size of mm

d	30
D	72
B	23

The basic rated load is kN

trends C	30.7
static state Co	8.8

Fatigue load limit Pu	0.46

Rated rotation speed is r/min

Refer to the speed	18000
limit speed	12000

Mass bearing + tightening sleeve	0.54

model

bearing	2207EKTN9
tapered adapter-sleeve	H307

Dimensions are mm

d1	30
d3	52
D1 ～	64.2
B1	35
B2	9
r1,2 min	1.1

Shoulder gear and chamfer size mm

Da max	45
db min	39
Da max	65
Ba min	5
ra max	1

Calculation coefficient

e	0.31
Y1	2
Y2	3.1
Y0	2.2