Catalogue NB - Rotary Ball Spline
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V)
I
u
m
ROTARY BALL SPLINE
c
u
m
4-d
G depth 0.4 X H
(oil hole from back side)
m -< > >>(/)
m s?
S wrrm m
C/3 T3
c N m
= m
□
Q.
L
73 O a tzz n
H
S
SPR6~10
H
L
V) c
u
m
G depth 0.4 X H
(oil hole from back side)
m c
VI
z
1
Ds
(-
0-
■
Q
Q.
u
m
c
6-S, depth h
H I
SPR13~60
O K
ball spline
support bearing
allowable static moment
second cross-sectional moment of inertia
cross-sectional coefficient
mass
^maximum rotational speed
part number
Ds
basic torque rating
basic load rating
basic load rating
nut
spline
tolerance
dynamic
static
dynamic
static
dynamic
static
shaft
Ct
Cot
C
Co
Cr
Cor
Mo
mm
U m
N • m
N • m
kN
kN
kN
kN
N • m
mm4
mm3
kg
kg/m
rpm
6
0/-12
1.5
2.4
1.22
2.28
0.6
0.5
5.1
5.9 X10
1.97X10
0.04
0.21
3,500
SPR 6
8
0
-15
2.1
3.7
1.45
2.87
1.2
1.14
7.4
1.9 X102
4.76X10
0.05
0.38
3,500
SPR 8
10
4.4
8.2
2.73
5.07
2.4
2.45
18.0
4.61 X102
9.22X10
0.09
0.60
3,000
SPR10
13
0
-18
21
39.2
2.67
4.89
3.0
3.70
13.7
1.38X103
2.13X102
0.17
1.0
1,800
SPR13
16
60
110
6.12
11.2
5.6
6.70
46
2.98X103
3.73 X102
0.33
1.5
1,500
SPR16
20
0
-21
105
194
8.9
16.3
6.61
7.89
63
7.35X103
7.34 X102
0.57
2.4
1,100
SPR20A
18.2
83
133
7.84
11.3
5.90
7.35
63
5.05X103
5.54 X102
0.45
2.0
1,200
SPR20
25
189
346
12.8
23.4
10.0
13.4
171
1.79X104
1.43 X103
0.81
3.7
900
SPR25A
23
162
239
12.3
16.1
9.11
11.5
104
1.27X104
1.11 X103
0.75
3.1
1,000
SPR25
28
289
412
18.6
23.2
13.2
18.0
181
2.75X104
1.96 X103
1.25
4.8
800
SPR30
37.4
0
-25
637
882
30.8
37.5
22.8
32.3
358
8.73 X104
4.67 X103
2.30
8.6
800
SPR40
47
1,390
3,180
46.1
74.2
27.2
42.1
696
2.16X105
9.21 X103
3.10
13.1
570
SPR50
56.5
0/-30
2,100
4,800
58.0
127.4
30.0
48.2
1,300
4.51 X105
1.60 X104
4.70
19
500
SPR60
00
c en z
[/1 c u m
c/i z >
T
2dG
CflCDO
H
c
R
Ta
^Maximum rotational speed for grease lubrication. Contact NB for further information when higher speeds or oil lubrication is required.
1kN = 102kgf 1N • m=0.102kgf • m
VI c u m
vi n Ta m S
B-39
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