Product Description:

The N31HRFK-LNK-NS-00 is a motor manufactured by Pacific Scientific as part of the POWERPAC N Stepper Motors series. It converts pulse commands from microstep or full-step drives into controlled rotary motion for positioning tasks in industrial automation. This makes it suitable for indexing, feed control, and other repeatable motion duties where step-by-step positioning is required. Its laminated rotor and single-shaft design support bidirectional torque delivery, and the 3.38-inch square housing matches the NEMA 34 footprint used on many material-handling stages. The square body format also fits common brackets and couplings used with this frame size.

Internally, the stator uses standard windings arranged for an 8-lead connection, allowing either series or parallel phase wiring. That arrangement gives the drive some flexibility when the application calls for a different balance of speed and torque from the same motor platform. The motor provides 200 full steps per revolution from a 1.8° step angle, and this motion is held within ± 3% step accuracy across the single-stack magnetic circuit. Because no encoder is installed, the motor operates with open-loop current regulation, so shaft position is determined by commanded pulses from the drive. A laminated rotor and straight-key shaft deliver a holding torque of 4.6 Nm, and the winding insulation withstands 340 Vdc.

Regular lead wires exit the housing through molded grommets in an 8-lead arrangement that accepts both unipolar and bipolar drive topologies. This connection style avoids the extra space required by a rear connector and supports routing through compact machine covers or cable channels. The stator winding insulation maintains 100 Megohms of resistance at ambient temperature, which helps limit leakage in humid or mist-prone settings. Overall body length is 94 mm, and the 3.38 in. square frame fits tight machine envelopes without extending beyond standard brackets. The standard construction does not include a shaft seal, so dusty installations may require external bellows.