Basic size of mm

d	280
D	420
B	106

The basic rated load is kN

trends C	1860
static state Co	3100

Fatigue load limit Pu	250

Rated rotation speed is r/min

Refer to the speed	1200
limit speed	1600

quality	50

model

Bearing cylindrical hole	*C3056
conical bore	*C3056K2)

Dimensions are mm

d	280
d2 ～	328
D1 ～	389
r1,2 min	4
s11) ～	21.3
s21) ～	-

Shoulder gear and chamfer size mm

da min	295
da max	350
Da min	375
Da max	405
Ca2) max	1.8
ra max	3

Calculation coefficient

k1	0.121
k2	0.098