Product Description:

Pacific Scientific’s P21NSXC-LNN-NS-04 belongs to the POWERMAX II P Motors series and functions as a hybrid stepper motor for precise positioning in automated machinery. It is a two-phase motor with standard construction, and it produces 200 discrete steps per revolution for repeatable incremental motion. Its step-by-step operation suits indexing tables, light gantries, and metering pumps where stable angular movement is more important than continuous high-speed rotation. That motion characteristic is also useful in feed systems and compact automation axes that depend on predictable step response from the drive.

The motor fits the NEMA 23 frame envelope and provides a holding torque of 0.82 N·m to resist external forces when the windings are energized. Each full step spans 1.8 degrees, so the motor can deliver ±1.5% positioning accuracy without an encoder. The windings are rated at 3.5 A and have a resistance of 1.06 Ω, which converts drive current into magnetic flux while keeping copper losses moderate; the 2.3 mH inductance also shapes current rise time for smoother micro-stepping. A detent torque of 0.03 N·m opposes cogging when the phases are de-energized, and the single smooth shaft simplifies direct coupling to pulleys or couplings.

The laminated rotor carries an inertia of 0.012 × 10⁻³ kg·m², allowing quick acceleration without excessive drive torque. Overall housing length is only 52.4 mm, so multiple axes can be placed closely inside compact equipment. The winding insulation is Class B at 130 °C with 100 MΩ resistance and a 340 Vdc dielectric rating, supporting operation in ambient temperatures from −20 °C to +40 °C. An IP23 enclosure limits dust ingress while still allowing airflow, and the 95 °C maximum case temperature indicates the thermal limit of the housing during service. At 0.68 kg, the motor adds little load to linear slides, and its receptacle connection simplifies cable attachment without disturbing flange alignment.