Basic size of mm

d	8
D	24
B	8

The basic rated load is kN

trends C	3.9
static state Co	1.66

Fatigue load limit Pu	0.071

Rated rotation speed is r/min

Refer to the speed	63000
Limit speed 1)	32000

Mass kg	0.017

model

Both sides are sealed	*628-2RZ
One side is sealed	*628-RZ

Dimensions are mm

d	8
d1 ～	14.5
d2 ～	-
D2 ～	20.6
r1,2 min	0.3

Shoulder gear and chamfer size mm

da min	10.4
Da max	-
Da max	21.6
ra max	0.3

Calculation coefficient

kr	0.025
fo	13