Managing PM AC Servo Motor Overloads: Thermal Time Constant

January 13, 2026
TwinSpin® high-precision backlash-free cycloidal reduction gearboxes

When intermittent power demands are high for an extended time, classic RMS calculations and speed-torque performance curves may not be enough for proper servo motor and drive selection. Considering thermal time constants is essential to prevent undersizing and overload. This paper explains how to incorporate thermal time constants to reduce the risk of under-sizing your selected servo motor.

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