Wave Generator Components; Bore Diameter For Solid Wave Generators - Harmonic Drive HFUS-2A Series Engineering Data

5.5 Wave Generator Components

Illustration 41.1 shows a standard Wave Generator with Oldham Coupling.
Illustration 41.1
Wave Generator Modifications
HFUS component sets have to compensate for runout of the motor shaft by default an Oldham coupling,
see illustration 41.2.
Principle of an Oldham Coupling
Illustration 41.2

5.6 Bore Diameter for Solid Wave Generators

If a large-bore Wave Generator or an input coupling completely free of backlash is required, the Oldham coupling may
be removed and the input shaft can be attached directly to the Wave Generator plug. This is the so called "Solid Wave
Generator" configuration. The Wave Generator bore may be enlarged or splined to accept a hollow shaft or a splined shaft.
The maximum allowable bore diameter, with or without keyway or splines, is given in table 42.2. Use of a Solid Wave
Generator demands tighter tolerances for the motor shaft and housing, as described in the section "Design Guidelines/
Assembly Tolerances" for the selected product.
1019658 11/2014
2)
1)
3)
7)
6)
4)
5)
1) Ball Separator
2) Wave Generator bearing
3) Wave Generator plug
4) Insert
5) Thrust washers
6) Snap ring
7) Wave Generator hub
41