Assembly Instructions - Harmonic Drive HFUS-2A Series Engineering Data

5.3 Assembly Instructions

The relative perpendicularity and concentricity of the three basic Harmonic Drive® elements have an important influence on
accuracy and service life.
Misalignments will adversely affect performance and reliability. Compliance with recommended assembly tolerances is
essential in order for the advantages of Harmonic Drive® gearing to be fully exploited.
Illustration 36.1
Careful attention should thus be paid to the following points:
1)
Input shaft, Circular Spline and housing must be concentric.
2)
Oil drain (for oil lubrication)
3)
The Flexspline flange diameter must be concentric to Circular Spline.
4)
A clamping ring with corner radius increases torque transmission capacity and prevents damage to Flexspline
diaphragm.
5)
A radial shaft seal for oil lubrication
6)
Preloaded and backlashfree double bearing support for output shaft
7)
Axial location of Flexspline
8)
Air vent (depending on the application)
9)
Flexspline and Circular Spline must be located in parallel and perpendicular to the output shaft.
10) Axial location of Wave Generator
11) Oil input (also enables assembly check)
12) Double bearing support for input shaft.
36
1019658 11/2014