Product Description:

The N31HRHL-LDK-NS-00 is a two-phase stepper motor built by Pacific Scientific for the POWERPAC N Stepper Motors series. It advances a load through discrete electrical pulses, allowing machinery to position tooling or products without closed-loop feedback. The motor’s heavy-duty NEMA mounting flange fits standardized brackets on packaging stations, small conveyors, and indexing tables used throughout industrial automation.

This model produces a holding torque of 4.6 Nm, allowing it to resist back-driving when the controller commands a standstill. A NEMA 34 frame code sets the bolt pattern, while the 3.38 in. square housing establishes the mounting footprint on a slide or machine frame. The motor provides 200 full steps per revolution for predictable incremental motion. Its insulation resistance is rated at 100 MΩ, reducing leakage current between the windings and laminated steel core. Regular lead wires exit the housing in a 4-lead parallel configuration, which provides lower phase inductance for improved midrange speed capability.

The stator windings have an impulse withstand rating of 340 VDC, supporting operation with a compatible stepper drive. The motor has an overall length of 94 mm, which conserves space in multi-axis machine frames. Cumulative positioning error remains within ± 3% of one full step, supporting repeatable open-loop positioning. A single magnetic stack couples with a laminated rotor to produce consistent torque while keeping rotor inertia modest. The double shaft has a straight key, allowing couplings or timing wheels to be mounted at either end. The motor is supplied without a shaft seal and is intended for applications that remain free from washdown exposure. It uses standard windings and operates without encoder feedback, allowing direct open-loop control from a suitable stepper drive.