Basic size of mm

d1	55
D	130
B	31

The basic rated load is kN

trends C	212
static state Co	240

Fatigue load limit Pu	26.5

Rated rotation speed is r/min

Refer to the speed	4800
limit speed	6300

Mass bearing + tightening sleeve	2.35

model

bearing	*21312EK
tapered adapter-sleeve	H312

Dimensions are mm

d1	55
d2 ～	87.8
d3	80
D1 ～	115
B1	47
B2	13
b	5.5
k	3
r1,2 min	2.1

Shoulder gear and chamfer size mm

da max	87
db min	65
Da max	118
Ba min	6
ra max	2

Calculation coefficient

e	0.22
Y1	3
Y2	4.6
Yo	2.8