Product Details：

KOLLMORGEN 6SM71K-3000 is a high-torque synchronous servo motor of the classic Seidel 6SM series, widely used on high-end ENGEL injection molding machines and die-casting automation equipment. It is the K variant of the 6SM71 frame, rated at 3000 rpm, with rated power 3kW and standstill torque up to 10.5Nm. It is designed for heavy-duty main hydraulic closed-loop axes, large core pull mechanisms and high-load ejector systems on plastic molding machines, delivering stable continuous torque under long cyclic production loads.

This servo motor is equipped with high-resolution position feedback element, which transmits rotor angle, speed and position data to matched Kollmorgen SERVOSTAR drives to build a reliable closed-loop motion control system. It adopts separate circular connectors for power circuit and feedback circuit to cut off electromagnetic interference generated by hydraulic pumps and solenoid coils. The stator winding uses high-grade insulation material, and the motor housing reaches IP64 protection grade, effectively blocking dust and oil mist in the factory environment. The rotor adopts optimized inertia design, which can realize fast acceleration and deceleration while keeping low position overshoot during high-speed molding cycles.

Engineers can adjust speed loop gain, position loop gain and feedforward parameters through dedicated drive software according to different process requirements. A built-in PTC thermal sensor continuously monitors winding temperature. When overheating, overload or feedback signal loss is detected, the servo drive will cut off output rapidly and trigger an alarm to prevent mold collision and permanent motor burnout. The whole mechanical structure is reinforced for vibration resistance, adapting to continuous S1 operation for long production shifts.

This KOLLMORGEN 6SM71K-3000 is an end-of-life model from the original manufacturer. It is supplied in the industrial automation aftermarket as a tested replacement spare part for legacy ENGEL injection molding equipment. Maintenance technicians can finish replacement safely after power cut, without modifying the original mounting flange size and drive control scheme.

It is a popular heavy-duty servo spare part in the automation spare parts market, providing sufficient high-torque driving capacity for the core closed-loop axes of injection molding machines.

Key specifications：KOLLMORGEN 6SM71K-3000 servo motor,3kW,10.5Nm standstill torque,3000rpm,IP64,dual circular connectors,class F insulation. Operating temperature range: 0°C to +55°C. It supports winding resistance test, feedback signal inspection and load aging test before shipment.

This 6SM71K-3000 servo motor cooperates with Kollmorgen SERVOSTAR servo drives, realizing stable high-torque closed-loop motion control for heavy-load injection molding axes.