Basic size of mm

d	55
D	120
B	29

The basic rated load is kN

trends C	156
static state Co	143

Fatigue load limit Pu	18.6

Rated rotation speed is r/min

Refer to the speed	6000
limit speed	7000

Specification standard holder	1.45

model

Standard holder	*NU311ECP
Other holder 1)	J,M,ML

Dimensions are mm

d	55
d1 ～	77.5
D1 ～	101
F,E	70.5
r1,2 min	2
r3,4 min	2
s1)	2

Shoulder gear and chamfer size mm

da min	66
Da max	68
db,Da min	73
Da max	109
ra max	2
rb max	2

Calculation coefficient

kr	0.15

Corner circle

model	HJ311EC
quality	0.19
Size B1	9
Size B2	14