Basic size of mm

d	30
D	72
T	20.75

The basic rated load is kN

trends C	55
static state Co	50

Fatigue load limit Pu	5.7

Rated rotation speed is r/min

Refer to the speed	7500
limit speed	9500

quality	0.39
model	*31306J2/Q
ISO335 dimension series (ABMA)	7FB

Dimensions are mm

d	30
d1 ～	52.7
B	19
C	14
r1,2 min	1.5
r3,4 min	1.5
a	22

Shoulder gear and chamfer size mm

Da max	40
db min	37
Da min	55
Da max	65
Db min	68
Ca min	3
Cb min	6.5
ra max	1.5
rb max	1.5

Calculation coefficient

e	0.83
Y	0.72
Yo	0.4