Product Description:

The B-202-C-31 is an AC brushless servo motor produced by Kollmorgen as a member of the Kollmorgen Goldline B and BH Motors series. Within multi-axis machinery, it provides closed-loop rotary actuation for positioning tables, gantries, and similar motion stages, linking directly to a Kollmorgen drive through its bayonet connectors. By integrating high-resolution resolver feedback, the motor supplies the controller with real-time rotor angle data so that precise velocity and torque loops can be maintained during industrial automation tasks.

The electrical design centers on a back electromotive force of 29.4 VRMS/kRPM, which indicates the voltage returned to the drive per 1000 rpm of shaft speed. A continuous phase current of 5.00 ARMS pairs with a continuous stall torque of 2.44 N-m; together, these values indicate the steady output limit at a 40 °C winding temperature. Coil impedance is shaped by a 2.34 Ω DC resistance and an inductance of 25.0 mH, parameters that influence thermal rise as well as current ripple under pulse-width-modulated drive excitation. The motor can be energized up to a 250 VRMS line-to-line bus, and its torque sensitivity is 0.49 N-m/ARMS, so commanded current can be translated into delivered torque without complex scaling.

For transient motion, the winding accepts a peak line current of 16.6 ARMS and produces a peak torque of 7.65 N-m, supporting rapid acceleration and deceleration profiles. Nominal operation is specified at 1.5 kW mechanical output and a rated speed of 6200 rpm, figures that help match the motor to load inertia and transmission ratios. The rotor’s reflected inertia is only 0.0000996 kg-m², which promotes quick response when the motor is coupled to low-mass loads. The motor has an IP65 shaft seal, a factory-installed rear shaft extension, and bayonet connectors with mating plugs. The shaft seal helps protect internal components from dust and low-pressure water jets.