Basic size of mm

d	60
D	130
B	31

The basic rated load is kN

trends C	91.3
static state Co	78

Fatigue load limit Pu	3.35

Rated rotation speed is r/min

Refer to the speed	9500
Limit speed 1)	6000

Mass kg	1.85

model

Bearing open type	312NR
Dust cover on one side	312-ZNR
There are dust covers on both sides	312-2ZNR
snap ring	SP130

Dimensions are mm

d	60
d1 ～	80.3
D2 ～	113
D3	125.22
D4	139.7
f	2.82
b	3.1
C	4.06
r0 max	0.6
r1,2 min	2.1

Shoulder gear and chamfer size mm

da min	71
Da max	119
db min	141
Ba min	3.5
Ca max	6.88
ra max	2