Product Description:

The B-402-B-23 servo unit is manufactured by Kollmorgen and belongs to the Kollmorgen Goldline B and BH Motors series. Designed for integration with a matched drive, this brushless motor supports closed-loop positioning tasks on pick-and-place gantries, feeders, and index tables. It produces controlled rotary motion by converting three-phase AC input from the drive into shaft torque. Its brushless design supports smooth torque delivery and consistent motion when it is paired with a suitable servo amplifier.

The motor has a continuous line current of 6.4 A RMS and a continuous stall torque of 6.8 N-m. These values describe the steady electrical and mechanical load the winding can carry without overheating during normal operation. During regular production cycles, the shaft can maintain a rated speed of 3000 RPM on a 230 VAC supply, and the voltage constant is 67.2 VRMS/kRPM. Electrical behavior is also influenced by a phase inductance of 50 mH, which affects current rise and servo loop response. Additional parameters include a 2.60-ohm DC resistance and a 320 VDC maximum bus voltage for drive matching, and this balance supports accurate position holding during speed changes and load variation.

For transient moves, the motor can reach a peak torque of 19.8 N-m while drawing as much as 18.8 A RMS from the drive, allowing short bursts of acceleration or rapid indexing. The rated mechanical output is 2.2 kW, which suits medium-power axes operating on a 250 V RMS line-to-line limit. A rotor inertia of 0.000323 kg-m² supports quick speed changes with stable motion control, and the thermal time constant is 22 min. This combination helps the motor handle repeated starts, stops, and short indexing moves in cyclic equipment. The motor uses four magnetic poles, which align it with standard sinusoidal commutation drives.