Selecting Harmonic Drive® Gears - Harmonic Drive CSD-2A Component Sets Engineering Data

4.1 Selecting Harmonic Drive® Gears
When choosing a gear, you should take into account both torque as well as stiffness requirements. In robot applications, for
example, the necessary torque is the more crucial factor for the gear size, while the process related torsional stiffness is often
decisive in machine tool manufacture. We therefore recommend that you always take both criteria into account according to the
following procedures.
Yes
Yes
1019659 11/2014
Application
Gear preselection
Torque based dimensioning
according to selection procedure
on page 18
Gear size sufficient?
Stiffness based dimensioning
according to selection procedure
on page 21
Gear size
sufficient?
End of gear selection
Selection of
a bigger size
No
Selection of
a bigger size
No
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