Selecting Harmonic Drive® Gears - Harmonic Drive SHG Series Manual

4.1 Selecting Harmonic Drive® Gears
When choosing a gear, both torque as well as stiffness requirements should be taken into account. In robot applications, for
example, the necessary torque is the more crucial factor for the gear size, while the torsional stiffness is often decisive in
machine tool applications. We therefore recommend that you always take both criteria into account according to the following
procedures.
ADVICE
We will be pleased to make a gear calculation and selection on your behalf. Please contact our application engineers.
Yes
Yes
1021387 12/2018 V02
Application
Preselection gear
Torque based dimensioning
according to selection
procedure on page 30
Gear size
sufficient?
Stiffness based dimensioning
according to selection
procedure on page 33
Gear size
sufficient?
End of gear
selection
Selection of a
bigger size
No
Selection of a
bigger size
No
29