Product Description:

The MH-827-C-43 is a servo motor produced by Kollmorgen within the M Goldline Servo Motors series. This frameless rotary unit supplies closed-loop torque for positioning tables, presses, and other industrial automation axes that need continuous rotation under drive control. By combining rare-earth magnets with a six-pole rotor, the motor delivers high torque density while remaining compatible with standard digital drives and feedback interfaces.

The electromagnetic profile centers on a continuous stall torque of 92.9 N-m, generated while the motor holds position without overheating at a continuous stall current of 39.7 Arms. Torque per ampere is set by a torque constant of 2.34 N-m/Arms, which allows the drive to predict output torque directly from phase current. A back-EMF constant of 142 Vrms/kRPM indicates the voltage returned to the inverter during motion, which affects bus voltage selection and regenerative behavior. The phase inductance is 9 mH, and with the 0.17-ohm DC resistance it helps limit current ripple and heating during PWM switching. Static friction is 1.38 N-m, so the controller must overcome this value to initiate movement, and viscous damping of 0.362 N-m/kRPM characterizes speed-dependent losses.

For transient events, the motor withstands a peak stall torque of 322 N-m when the inverter can supply a peak stall current of 145 Arms; these ratings cover quick indexing or shock loads that exceed the continuous envelope. The 0.0888 kg-m² rotor inertia supports smooth acceleration without excessive overshoot, and six electrical poles synchronize with typical 8 or 12 kHz current loops. A motor weight of 86.2 kg influences mounting structure and thermal mass, while the thermal time constant of 55 min indicates how slowly the winding temperature rises or falls, allowing duty-cycle calculations for repetitive processes.