Basic size of mm

d	280
D	380
H	80

The basic rated load is kN

trends C	494
static state Co	2320

Fatigue load limit, Pu	47.5
The min load factor, A	28

Rated rotation speed is r/min

Refer to the speed	750
limit speed	1000

quality kg	26.5
model	51256M

Dimensions are mm

d	280
d1 ～	375
D1 ～	284
r1,2 min	2.1

Shoulder gear and chamfer size mm

da min	339
Da max	321
ra max	2