N31HRHL-LNK-NS-04 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific N31HRHL-LNK-NS-04 is a stepper motor in the POWERPAC N Stepper Motors series, featuring a NEMA 34 heavy duty mounting and a 3.38 inch square frame. This standard construction motor delivers a holding torque of 4.6 Nm with a single straight key shaft and has 200 full steps per revolution at a 1.8 degree step angle. It is equipped with 4 lead parallel leadwire configuration and no feedback encoder.
Internal Product Review
The N31HRHL-LNK-NS-04 is a Pacific Scientific stepper motor built in a NEMA 34 frame with standard construction. A 1.8° step angle and ±3% step accuracy support consistent indexing and controlled positioning in motion applications. Holding torque of 4.6 Nm and a 4-lead parallel configuration make this unit a strong choice for dependable drive performance.
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Product Description:
The N31HRHL-LNK-NS-04 is a stepper motor produced by Pacific Scientific and offered in the POWERPAC N Stepper Motors series. As a NEMA-frame motion device, it converts pulse commands from an indexer or drive into incremental rotation so that automated tables, small actuators, or metering pumps can position loads without closed-loop feedback. Its laminated rotor, single shaft with a straight key, and standard winding package form a durable assembly that fits heavy-duty NEMA mounts in industrial machines.
This model develops a holding torque of 4.6 Nm, giving the shaft enough static force to resist back-driving while energized. The square housing measures 3.38-inch square frame, providing the thermal surface required for continuous duty, while the active stack is only 94 mm long, so cabinet depth is conserved. Inside that frame, a single rotor stack is wound for 200 full steps per revolution. Paired with the 1.8° step angle, this resolution suits many index tables without microstepping. Insulation is rated to 340 Vdc, which permits operation on higher bus voltages common to contemporary bipolar drives. The motor uses standard construction, standard windings, and a 4-lead parallel leadwire connection, simplifying termination. Because no feedback device is fitted, commutation is open-loop, while the heavy-duty NEMA mounting, straight shaft key, and laminated rotor support predictable step response.
An insulation resistance of 100 Megohms helps prevent leakage current when the windings are energized, and the NEMA 34 frame standard supports interchangeability with other 3.4-inch square motors. Position repeatability is maintained within a ±3% step accuracy band, a tolerance adequate for feeders, labeling heads, and other mid-precision axes. The regular leadwire connection style, heavy-duty mounting lugs, and single-shaft layout streamline integration when only one end of the shaft is available for coupling. With a standard winding type, one rotor stack, and no encoder, the unit remains electrically simple while still delivering firm torque output through its 4-lead parallel circuit.
