Product Description:

The MSM165-146-304-S-0KA is a brushless AC servo motor produced by Kollmorgen within the MSM Brushless Servo Motors series. It serves as a compact rotary actuator for coordinated motion axes in packaging machines, small machining centers, and automated assembly lines. By combining permanent-magnet construction with a high-energy winding design, the unit converts drive current into controllable mechanical torque for positioning, speed regulation, and cyclic indexing duties across a compatible drive bus. An integrated single-turn encoder provides absolute position data, and the motor does not include an internal brake.

The motor delivers a continuous torque of 16.5 Nm at the flange while sustaining a rated speed of 3000 rpm, allowing constant power output across typical machine duty cycles. To support dynamic events, the windings can accept a peak current of 52.3 A(pk), far above the stall value of 13.6 A(pk), and the six-pole rotor generates 161 V per kilorevolution as back electromotive force. Electrical dynamics are shaped by the phase inductance of 18.5 mH and a phase resistance of 1.56 Ω; together these values influence current rise time, heating, and the choice of matching drive hardware. The threaded shaft end uses an M8 × 1.25 mm thread cut to 19 mm depth so couplings or tensioning hardware can be fastened directly without modification to the output shaft.

During rapid indexing, the electromagnetic stack can generate a peak torque of 54 Nm, which is transmitted through a rotor with an inertia of 0.0036 kg·m²; this moderate inertia balances acceleration response with mechanical damping for lightly loaded axes. System power is taken from a 460 V DC bus, and the motor converts each ampere into motion with a torque constant of 1.34 Nm/A. A net mass of 16.3 kg aids heat absorption during intermittent overloads, and the single-turn high-resolution feedback device communicates absolute position to the drive so homing routines can be eliminated at startup.