Product Description:

The P22NRXD-LNN-NS-02 is a hybrid stepper motor manufactured by Pacific Scientific within the POWERMAX II P Motors series. Built on a NEMA 23 frame, this two-phase device translates pulse commands from indexers or microstepping drives into incremental rotary motion for pick-and-place heads, indexing tables, and light gantries. It operates without feedback, so positioning is achieved by counting step commands rather than reading an encoder or resolver. This arrangement is typical in automation cells that require repeatable movement with a simple control approach.

This motor advances one full step every 1.8 degrees, yielding 200 discrete positions per revolution and maintaining ±1.5% step accuracy for consistent fixture alignment. A static holding torque of 1.43 Nm resists external loads when the windings remain energized. Each phase draws 2.5 A, and the coil has an inductance of 6.2 mH, which affects current rise time, vibration behavior, and heat generation. The laminated stack measures 78.8 mm in length, allowing a two-stack magnetic circuit that increases torque while keeping the motor within standard NEMA mounting limits. Class B insulation supports internal temperatures up to 130 °C, allowing continuous duty in general machinery when adequate airflow is available.

The shaft can withstand axial thrusts up to 60 N and radial side loads up to 90 N, so moderate-sized pulleys or couplings can be mounted directly. The rotor inertia is only 0.000025 kg·m², which supports rapid acceleration and short settling times when the axis changes direction. An IP23 enclosure provides basic protection against fingers and light spray, making the motor suitable for sheltered installations operated between -20 °C and +40 °C. A 6.35 mm smooth single-ended shaft also simplifies clamp-hub attachment without secondary machining.