Product Description:

The K31HRHJ-LNK-NS-00 is a stepper motor manufactured by Pacific Scientific and assigned to the K PowerPac Motors series. As a two-phase positioning device, it converts digital pulse trains from indexers or microcontrollers into precise incremental motion for industrial automation axes that require repeatable open-loop control. Heavy-duty NEMA mounting and a laminated rotor let the motor deliver full rated torque without complex cooling or feedback hardware, making it suitable for conveyors, pick-and-place heads, and small gantry stages.

This model supplies a holding torque of 5.9 Nm, so the load can remain static when power is applied but motion commands are idle. Each electrical transition advances the shaft by 1.8°, and accumulated position error is limited to ±1.5% per step. The motor sits in a NEMA 34 frame that measures 3.38 in. square and uses a single stack to balance inertia and acceleration. Overall body length is 94 mm, which helps keep installation depth short in compact equipment. A standard winding set, rated for ambient temperatures from -20 °C to +40 °C, drives the laminated rotor through a single straight-key shaft. Because the assembly is supplied without a shaft seal, the front bearing should be shielded if airborne fluids are present.

Electrical insulation is rated at 100 Megohms and can withstand up to 340 Vdc, offering suitable margin for common chopper drives. Power is introduced through regular leadwires arranged in a 4 lead parallel pattern, enabling either parallel or series phase connections depending on the desired current. The enhanced SIGMAX construction increases magnetic flux density in the stator teeth. A no-feedback configuration keeps wiring minimal, and the heavy-duty NEMA face couples directly to gearboxes or end effectors without adapters.