Product Description:

The N31HRFJ-LNK-NS-00 is a stepper motor manufactured by Pacific Scientific as part of the POWERPAC N Stepper Motors series. Classified as a hybrid device, it converts digitally generated pulse trains into proportional shaft movement through discrete electromagnetic detents. In automated packaging, pick-and-place, and small gantry systems, the motor delivers repeatable incremental motion without closed-loop feedback, providing straightforward position control for tooling, tables, or conveyors. This operating method suits applications that need predictable indexing and simple command sequencing from a compatible stepper drive.

With a frame footprint of 3.38 in. square, the motor conforms to the NEMA 34 size class and mounts through a heavy-duty NEMA flange for rigid installation. Each electrical pulse advances the rotor by 1.8°, producing 200 full steps per revolution that simplify direct coupling to lead screws or timing wheels. A holding torque of 4.6 Nm keeps loads stationary whenever drive current is maintained, which is useful in indexing stations and other stop-and-hold motion tasks. The eight-lead regular leadwire connection permits either series or parallel winding selection to match the electrical requirements of the drive. Standard winding and standard construction support stable thermal behavior during normal operation, and the rugged mounting face helps resist reaction forces in belt-driven axes.

Its laminated rotor, one-stack core, and 94 mm overall length give the motor a low-inertia profile that supports quick acceleration and controlled stopping. Insulation integrity is rated at 100 Megohms, and the windings withstand up to 340 Vdc during hi-pot testing for use with modern bipolar chopper drives. Step accuracy remains within ± 3 %, so positioning error stays consistent across repeated motion cycles when the load remains within the motor’s operating capability. A single shaft with a straight key transfers torque to couplings, while the lack of a shaft seal suits clean, dry environments. The motor has no feedback device and relies on open-loop drive signals, and its heavy-duty leadwires exit through a reinforced grommet that helps protect the regular connection style.