Product Description:

The P21NSXC-LSN-NS-02 is a two-phase stepper motor manufactured by Pacific Scientific for the POWERMAX II P Motors series. It occupies the NEMA 23 frame envelope, uses standard construction with a standard rotor, and carries C-type windings. Electrical termination is through a receptacle on the housing, which allows straightforward disconnection when the motor is removed. Intended for incremental motion in pick-and-place stations and indexing tables, the motor advances by discrete electromagnetic steps rather than continuous rotation, supplying repeatable position control in open-loop systems.

With one stator stack, this unit develops a nominal holding torque of 0.82 Nm, while the detent torque when unenergized is 0.028 Nm, reflecting strong magnetic coupling. Each phase can accept 3.5 A in parallel wiring; at that current, the copper path shows only 0.53 Ω resistance at 40 °C, which helps limit I²R heating. The winding inductance of 2.3 mH moderates current rise times and works with microstepping drives for smoother motion. Class B insulation, rated for 130 °C and 340 VDC, provides 100 megohms of resistance to ground, and the NEMA mounting face allows the motor to bolt directly to standardized gearheads and brackets.

Motion granularity is set by a 1.8-degree step angle, yielding 200 discrete full steps per revolution and a native accuracy of ±1.5%. The motor withstands ambient temperatures from -20 °C to +40 °C without derating, and its case is allowed to reach a surface temperature of 95 °C during heavy-duty cycles. An internal encoder is not included, so the unit operates without feedback and relies on open-loop pulse counts for position tracking. The smooth shaft eases coupler installation, and insulation integrity is preserved under expected thermal loads.