Basic size of mm

d	5
D	11
B	4

The basic rated load is kN

trends C	0.54
static state Co	0.245

Fatigue load limit Pu	0.011

Rated rotation speed is r/min

Refer to the speed	120000
limit speed	60000

Mass kg	0.00062
model	W628/5-2Z

Dimensions are mm

d	5
d1 ～	6.8
D1 ～	9.9
r1,2 min	0.15

Shoulder gear and chamfer size mm

da min	5.8
Da max	10.2
ra max	0.1

Calculation coefficient

kr	0.015
fo	11