Product Description:

The MH-427-B-61 is a brushless servo motor produced by Kollmorgen and placed within the M Goldline Servo Motors series. It is intended for closed-loop motion axes in automated machinery where precise speed and position control are required. The motor uses a standard metric mounting pattern on a 130 mm bolt circle, so it can be integrated directly onto gearboxes, actuators, or machine frames. Brushless construction eliminates brush wear and supports cleaner operation in enclosed machinery. Closed-loop control allows the motor and drive to correct speed or position errors as load conditions change.

This model is rated for a continuous mechanical output of 4.2 kW, generated from a shaft that can apply a steady 15.8 N·m of torque without thermal derating. The stator is wound for a 480 VAC drive bus, allowing connection to common three-phase industrial supplies. When commanded, rotor velocity can rise as high as 3200 RPM, which sets the upper operating speed for the associated controller. Environmental sealing meets IP65, so airborne dust and low-pressure water jets do not reach the internal bearings, windings, or the rear-mounted resolver. The rear-mounted resolver returns position information continuously, helping the controller maintain accurate commutation and motion feedback across the speed range. That combination supports continuous operation inside cabinets or directly on equipment exposed to washdown or particulate.

The dynamic profile includes a reflected inertia of 0.00657 kg·m², which allows rapid acceleration while maintaining stable response to load changes. During demand peaks, the magnetic circuit can supply up to 37.1 N·m for short periods, providing extra torque for indexing, punching, or winding cycles. This behavior is useful in applications with frequent starts and stops. A mass of 20.0 kg supports thermal stability during repetitive duty. An embedded thermostat opens at 170 °C and signals the drive at 120 VAC, 4 A to remove power before insulation limits are exceeded.