Product Description:

The N31HRHJ-LNK-NS-00 is a stepper motor manufactured by Pacific Scientific for the POWERPAC N Stepper Motors series. It produces indexed motion for automated positioning stages, conveyors, and machine tool axes where open-loop control is acceptable. The windings are of standard type and operate without feedback devices, which suits applications that do not require closed-loop commutation.

This model uses a NEMA 34 mounting interface built around a 3.38 in. square frame and extends to a housing length of 94 mm. With a holding torque of 4.6 Nm, the rotor remains locked against external disturbance when the windings are energized. Each complete revolution is subdivided into 200 full steps per revolution, so the drive electronics can command incremental motion without microstepping. The motor is assembled in standard construction with a laminated rotor to reduce eddy losses and uses regular lead wires in a 4-lead parallel arrangement. Heavy-duty NEMA mounting provisions simplify attachment to gearboxes or end effectors, and the single-stack construction balances torque production with axial length.

The shaft is single-ended with a straight key and has no shaft seal, so environmental protection must be handled at the machine interface. Step resolution comes from the internal step angle of 1.8°, while motion accuracy remains within ±3% because of tight rotor-stator tolerances. Dielectric endurance is supported by an insulation voltage rating of 340 Vdc and an insulation resistance of 100 Megohms. A winding temperature monitor is not supplied, yet the no-feedback configuration simplifies cabling. The construction uses standard winding insulation, and the absence of an encoder reduces overall inertia, making the motor suitable for index tables, pick-and-place heads, and low-speed linear actuators that rely on predictable open-loop torque margins.