Basic size of mm

d	240
D	360
B	56

The basic rated load is kN

trends C	523
static state Co	800

Fatigue load limit Pu	78

Rated rotation speed is r/min

Refer to the speed	2000
limit speed	2600

Specification standard holder	20

model

Standard holder	NU1048MA
Other holder 1)	-

Dimensions are mm

d	240
d1 ～	282
D1 ～	317
F,E	270
r1,2 min	3
r3,4 min	3
s1)	7.5

Shoulder gear and chamfer size mm

da min	253
Da max	266
db,Da min	274
Da max	347
ra max	2.5
rb max	2.5

Calculation coefficient

kr	0.1

Corner circle

model	HJ1048
quality	2.25
Size B1	14
Size B2	27