Basic size of mm

d	45
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 kg	0.47

model

Column hole	1209ETN9
conical bore	1209EKTN9

Dimensions are mm

d	45
d2 ～	57.5
D1 ～	73.7
r1,2 min	1.1

Shoulder gear and chamfer size mm

da min	52
Da max	78
ra max	1

Calculation coefficient

e	0.21
Y1	3
Y2	4.6
Y0	3.2