Product Description:

The M-403-C-A3-B3 is a brushless servo motor manufactured by Kollmorgen for the M Goldline Servo Motors series. In industrial automation, this motor supplies precisely regulated rotary motion to indexing tables, gantry axes, and other closed-loop positioning systems. The unit’s standard metric mounting pattern, rear-shaft extension, and screw-thread power connector simplify integration with gearboxes, couplings, and feedback devices that use the same mechanical registry and electrical pinout.

Under continuous load at 25 °C, the motor sustains 6.9 N-m of stall torque, which is the constant torque it can apply to a stationary load without overheating. That torque is matched to inertial and frictional demands while the motor operates at the rated speed of 5000 rpm, where servo bandwidth and mechanical throughput remain balanced. Thermal equilibrium at that speed corresponds to a shaft output of 2.8 kW, which indicates the mechanical power available for steady-state duty. To reach that output, the drive must supply 9.8 A RMS through phase windings with a resistance of 0.97 ohms, which affects copper loss and heat dissipation. A torque constant of 0.66 N-m/A RMS and a line inductance of 21 mH further describe the electromagnetic circuit, and the continuous stall torque decreases slightly to 6.5 N-m at 40 °C.

During rapid acceleration, the motor can generate a peak torque of 19.8 N-m and draw up to 31.3 A RMS for short intervals, so the drive must be sized for brief overload demand. When power is removed, a permanent-magnet brake provides 8.0 N-m of holding torque at 24 VDC to secure vertical or safety-critical loads. Dynamic response is supported by a rotor inertia of 0.00259 kg·m², which balances quick acceleration with stable servo tuning. The motor weighs 10.5 kg and is supplied without mating plugs, allowing cable terminations to be selected for the installation.