Recommended Tolerances For Assembly Shg-2So And Shg-2Sh - Harmonic Drive SHG Series Manual

5.4 Recommended Tolerances for Assembly SHG-2SO and SHG-2SH

In order to use the full performance of Harmonic Drive® Units, it is essential that the tolerances according to
table 51.2 are observed for the input assembly.
Illustration 51.1
Recommended housing tolerances H7
Recommended shaft tolerances h6
Table 51.2
Unit
a [mm]
[mm]
b
[mm]
[mm]
c
[mm]
The values in brackets are the recommended tolerances for component sets featuring a Wave Generator without Oldham Coupling. The Oldham Coupling
serves to compensate for eccentricity of the input shaft and is available in the standard version. For the direct mounting of a Wave Generator without
Oldham Coupling (Solid Wave Generator) on a motor shaft, the shaft tolerances should fulfill the DIN 42955 R standard.
1021387 12/2018 V02
SHG-14 SHG-17 SHG-20
0.011 0.015 0.017
0.017 0.020 0.020
(0.008) (0.010) (0.010)
0.030 0.034 0.044
(0.016) (0.018) (0.019)
SHG-25 SHG-32 SHG-40
0.024 0.026 0.026
0.024 0.024 0.032
(0.012) (0.012) (0.012)
0.047 0.050 0.063
(0.022) (0.022) (0.024)
SHG-45 SHG-50 SHG-58
0.027 0.028 0.031
0.032 0.032 0.032
(0.013) (0.015) (0.015)
0.065 0.066 0.068
(0.027) (0.030) (0.033)
SHG-65
0.034
0.032
(0.015)
0.070
(0.035)
51