Basic size of mm

d	38.1
D	79.375
T	29.37

The basic rated load is kN

trends C	104
static state Co	110

Fatigue load limit Pu	12.5

Rated rotation speed is r/min

Refer to the speed	7000
limit speed	9500

quality	0.67
model	*3490/3420/QCL7CVQ492
series	3400

Dimensions are mm

d	38.1
d1 ～	57.3
B	29.771
C	23.812
r1,2 min	3.5
r3,4 min	3.3
a	20

Shoulder gear and chamfer size mm

Da max	46
db min	49.5
Da min	65
Da max	68
Db min	73
Ca min	4
Cb min	5.5
ra max	3
rb max	3

Calculation coefficient

e	0.37
Y	1.6
Yo	0.9