N31HRFL-LSS-SS-02 Pacific Scientific
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The Pacific Scientific N31HRFL-LSS-SS-02 is a stepper motor in the POWERPAC N Stepper Motors series with a NEMA 34 heavy duty mounting type and a 3.38 inch square frame. It offers 200 full steps per revolution, a 1.8 degree step angle, and provides a holding torque of 4.6 Nm. This standard construction motor features 8 leadwire connections, a laminated rotor design, and a 94 mm length.
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Product Description:
The N31HRFL-LSS-SS-02 is a stepper motor built by Pacific Scientific within the POWERPAC N Stepper Motors series. It converts indexer or drive pulses into controlled angular displacement for positioning tables, material feeds, and other motion functions in industrial automation. The frame follows the NEMA 34 standard, allowing the motor to fit compatible machine mounts and motion-control assemblies.
A step angle of 1.8° sets the fundamental increment, and 200 full steps per revolution allow the shaft to be indexed in small, repeatable increments. Step accuracy is maintained within ±3%, so cumulative position error stays low over long travel distances. The laminated rotor and standard winding produce a holding torque of 4.6 Nm, which helps resist load forces when the energized motor is stationary. The standard construction uses a single-stack magnetic assembly that keeps the overall length at 94 mm. Internal heavy-duty bearings support axial and radial loads, while the heavy-duty NEMA flange provides a rigid connection to the machine. This mounting arrangement helps maintain shaft alignment when the motor drives positioning tables, material feeds, gearheads, or couplings under changing loads.
The windings have a minimum insulation resistance of 100 megohms and can withstand up to 340 VDC during dielectric testing. These electrical characteristics support operation with common bipolar or unipolar stepper drives. An 8-lead cable exits through the regular lead-wire connection, allowing the windings to be connected in series or parallel without an additional terminal block. The motor has a 3.38-inch square front face, providing the required clearance for compatible gearheads and couplings while matching the mounting pilot. The single-stack magnetic core helps limit inductance, and the standard winding keeps electrical time constants compatible with midrange microstep drives. Series wiring can favor torque at lower speeds, while parallel wiring can improve current response as shaft speed increases. The selected connection should match the drive’s current capacity and the speed requirements of the application.
