Harmonic Drive HFUS-2A Series Engineering Data page 43

Grease Lubrication
Illustration 43.1 shows the areas to be lubricated, see also table 44.1. During operation, the 4BNo.2 grease becomes relatively
liquid. Therefore the gear must be sealed as for oil lubrication, when this grease is used. If required, please ask Harmonic Drive®
for further information.
Illustration 43.1
The required amount of grease is dependent on the size and the operating position of the gear.
The operating positions "Wave Generator above" or "Wave Generator below" refer to the relative position of the
Wave Generator to Flexspline flange, see illustration 43.2
Illustration 43.2
Wave Generator below
Operation mainly with Wave Generator in vertical position or below
The supplied grease quantity is calculated for a Unit operating mainly with Wave Generator in vertical position or below.
See table 44.1.
Operation mainly with Wave Generator above
If the gear is mainly operated with Wave Generator above additional grease must be supplied above the Wave Generator,
see illustration 43.3 and table 44.1.
Illustration 43.3
If the units are used mainly with Wave
Generator above, then additional grease
lubrication is necessary.
1019658 11/2014
Operating Positions
Wave Generator vertical Wave Generator above
43