Product Description:

The N31HCHJ-LNK-NS-01 is a stepper motor produced by Pacific Scientific as part of the POWERPAC N Stepper Motors series. In automated indexing tables, packaging machinery, and general motion stages, this unit converts discrete drive pulses into incremental shaft rotation for open-loop positioning without feedback sensors. By combining torque-dense magnetics with the NEMA 34 frame standard, the motor supplies controlled rotary motion that can be synchronized directly with a stepper drive pulse train. Proper load matching helps it maintain commanded position during repeated starts, stops, and short indexing moves.

Each revolution is divided into 200 full steps, which corresponds to a mechanical step angle of 1.8°, and cumulative error remains within ±3%. A laminated rotor and standard windings produce a holding torque of 4.6 Nm when both phase pairs are energized. Insulation integrity is supported by 100 Megohms of resistance and a dielectric withstand of 340 Vdc. The 4-lead parallel wiring reduces phase inductance for faster current rise and helps the motor respond cleanly to higher pulse rates. The design does not include an encoder, so motion is tracked from commanded pulse counts rather than from a separate feedback device. A single-stack construction fits the NEMA 34 footprint while keeping inertia suitable for stop-and-go positioning.

The motor uses a 3.38 in. square frame and is 94 mm long from the mounting face to the end bell, which leaves room for heavy-duty NEMA mounting hardware. A keyed single shaft with a straight key is protected by an integral shaft seal to help limit contamination during repeated cycling. Power is routed through a System MS connector, which simplifies attachment with keyed mating hardware and supports secure cable retention. The heavy-duty NEMA mounting pattern supports alignment on machine brackets and adapter plates, and the sealed shaft area helps the motor suit enclosed industrial assemblies.