Baldor 23H Series Installation & Operating Manual page 143

minimal power dissipation. For a mismatch of 2:1 the energy increases by 56%.
System power dissipation is minimized with inertia matching. Inertia ratio ranges, by markets,
traditionally are:
1:1 to 3:1 for robotics type applications
4:1 to 7:1 for machine tool type applications
5:1 to 10:1 for other X-Y positioning type applications
Conclusion
Thus recommendations would be: 1) whenever there is a choice between two motor frame sizes,
use the larger shorter motor, 2) maintain inertia matching as close as possible, i.e. use a load/motor
mismatch of 10:1 as a maximum guide.
Figure 1. Response with various load/motor inertia mis-matches.
Application Notes
Page 23