Product Description:

The K31HMHJ-LNK-NS-00 is a hybrid stepper motor produced by Pacific Scientific within the K PowerPac Motors series for controlled incremental motion in automation equipment. Its enhanced SIGMAX construction increases magnetic flux, while a laminated rotor, a single shaft with a straight key, and a one-stack magnetic circuit keep inertia low for quick starts and stops. The unit uses a 3.38-inch square frame, mounts on heavy-duty NEMA patterns, and routes power through a splash-proof conduit that terminates on an internal board through a metric PG11 thread. The no-feedback configuration simplifies wiring, and the motor has no shaft seal. That mechanical layout suits machines that rely on stable mounting and predictable shaft alignment during repeated start-stop cycles.

A holding torque of 5.9 Nm keeps loads stable between steps, and each full step advances the shaft by 1.8°, with cumulative positioning error limited to ±1.5 %. The standard winding uses a 4-lead parallel set, so the motor can be connected for series or parallel drive selection depending on the required current and voltage balance. Motor insulation measures 100 Megohms, which helps limit leakage current and supports high-impedance drive electronics. Because the shaft moves in fixed increments, control pulses can be translated into repeatable angular positioning without an encoder channel.

The stator insulation withstands up to 340 Vdc, providing margin above typical microstep drive outputs. Continuous service is specified from -20 °C to +40 °C, so the motor can operate in unconditioned cabinet environments within that temperature range. The frame follows the NEMA 34 standard, and the overall body length is 94 mm, which helps the motor fit compact machine layouts and retrofit spaces with limited depth. The short body also leaves more room for couplings, guards, and adjacent hardware in dense assemblies.