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5.9.1 Assembly of the Circular Spline
The Circular Spline must not be bended during the assembly. Therefore it is particularly important that the mounting base
of the Circular Splineis absolutely even and that the mounting base centering causes neither clamping strength nor radial
clearance.
Explanation:
A slightly deformed Circular Spline can result in irregular running characteristics. If a deformation of the Circular Spline is
suspected it should be verified whether the Circular Spline can rotate freely within its locating bore in the machine housing
without any friction. Even slight friction may be an indicator for a possible radial deformation of the Circular Spline. In this
case the tolerances of the machine housing and the Circular Spline must be checked.
For grease lubrication the Circular Spline teeth must be lubricated in accordance with illustration 43.1. For the correct
mounting please also see illustration 39.1.
Circular Spline Screws
Table 48.1
Size
Number of screws
Size of screws
Pitch circle diameter
Clamping torque
Torque transmitting capacity
The tables are valid for completely degreased pads (friction coefficient µk = 0.15) and metric socket head cap screws according to EN ISO 4762 in 12.9 quality,
untreated, oiled, with µtotal = 0.12.
5.9.2 Assembly of the Flexspline
Care must be taken that the heads of clamping bolts, washers, nuts or clamping rings do not interfere with local flexing of
the Flexspline. Otherwise eventual failure will result.
For this reason, fastening elements must not enter the region which is marked by ø D. Please refer to illustration 48.2.
Illustration 48.2
Right
Table 48.4
Size
ø D
48
14
17
6
12
M3
M3
[mm]
44
54
[Nm]
2.0
2.0
[Nm]
54
131
14
17
20
48
60
70
20
25
32
12
12
12
M3
M4
M5
62
75
100
2.0
4.5
9.0
147
314
675
Illustration 48.3
Wrong
25
32
40
88
114
140
40
45
50
12
12
12
M6
M8
M8
120
140
150
15.3
37
37
1150
2440
2620
45
50
158
175
1019658
58
12
M10
175
74
4820
[mm]
58
203
11/2014
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