Basic size of mm

d	55
D	120
B	29

The basic rated load is kN

trends C	127
static state Co	108

Fatigue load limit Pu	4.55

Rated rotation speed is r/min

Refer to the speed	6000
limit speed	10000

Mass kg	1.75

model

Bearing belt positioning groove	QJ311N2MA
No positioning slot	QJ311MA

Dimensions are mm

d	55
d1 ～	77.2
D1 ～	97.8
r1,2 min	2
a	61

Positioning of the slot size mm

b	6.5
h	8.1
ro	0.5

Shoulder gear and chamfer size mm

da min	66
Da max	109
ra max	2