Product Description:

The M-103-A-23 is a brushless servo motor produced by Kollmorgen within the M Goldline Servo Motors series. It is intended for precision velocity and position control in automated machinery, where its electromechanical profile pairs with digital drives for coordinated multi-axis motion. A standard metric mount simplifies integration, bayonet connectors simplify field wiring, and a frameless resolver supplies analog feedback for closed-loop regulation. The motor is built without a front shaft seal, and it includes a rear shaft extension so auxiliary loads or sensing devices can be coupled directly.

Under continuous duty at 40 °C, the motor sustains 0.84 N·m of torque while drawing a line current of 2.4 A RMS; these values establish the thermal working point for sizing power electronics and mechanical transmissions. Phase copper losses are determined by a DC resistance of 6.80 Ω, and the electromagnetic time constant is set by a line-to-line inductance of 30.0 mH. Back electromotive force is specified at 20.9 VRMS/kRPM, providing a proportional relationship between speed and generated voltage that drive controllers use for field-oriented control. With a rated power output of 0.54 kW and a mass of 3.2 kg, the unit offers a high power-to-weight ratio for compact stages, pick-and-place heads, or indexing tables.

For transient moves, the drive may command a peak line current of 7.2 A RMS, allowing the motor to produce up to 2.41 N·m of torque to overcome static friction or accelerate inertia. The mechanical envelope tolerates speeds to 7500 RPM, so high-throughput cycles are possible without gearbox multiplication. Dynamic behavior is further influenced by a rotor inertia of 0.000212 kg·m², enabling rapid reversals with limited overshoot. Because there is no front shaft seal, the installation environment must be free of oil splash; however, the absence of the seal reduces drag losses and heat.