Basic size of mm

d	20
D	52
B	21

The basic rated load is kN

trends C	23.4
static state Co	16

Fatigue load limit Pu	0.68

Rated rotation speed is r/min

Refer to the speed	22000
limit speed	12000

Mass kg	0.21
model	4304ATN9

Dimensions are mm

d	20
d1 ～	31.8
D1 ～	42.2
r1,2 min	1.1

Shoulder gear and chamfer size mm

da min	26.5
Da max	45.5
ra max	1

Calculation coefficient

kr	0.06
fo	13