Basic size of mm

d	380
D	520
B	106

The basic rated load is kN

trends C	2120
static state Co	4000

Fatigue load limit Pu	300

Rated rotation speed is r/min

Refer to the speed	950
limit speed	1300

quality	65.5

model

Bearing cylindrical hole	*C3976MB1)
conical bore	*C3976KMB1)

Dimensions are mm

d	380
d2 ～	429
D1 ～	489
r1,2 min	4
s11) ～	10
s21) ～	-

Shoulder gear and chamfer size mm

da min	395
da max	425
Da min	490
Da max	505
Ca2) max	9.7
ra max	3

Calculation coefficient

k1	-
k2	0.128