Basic size of mm

d	140
D	250
B	68

The basic rated load is kN

trends C	655
static state Co	830

Fatigue load limit Pu	93

Rated rotation speed is r/min

Refer to the speed	2800
limit speed	4800

Specification standard holder	15.6

model

Standard holder	*NUP2228ECML
Other holder 1)	-

Dimensions are mm

d	140
d1 ～	179
D1 ～	217
F,E	169
r1,2 min	3
r3,4 min	3
s1)	-

Shoulder gear and chamfer size mm

da min	154
Da max	-
db,Da min	183
Da max	236
ra max	2.5
rb max	2.5

Calculation coefficient

kr	0.2

Corner circle

model	-
quality	-
Size B1	-
Size B2	-