Product Description:

The P22NRXA-LNN-NS-00 is a two-phase hybrid stepper motor produced by Pacific Scientific as part of the POWERMAX II P Motors series. In industrial automation cells, it advances load stations in 1.8-degree increments, giving open-loop positioning where optical or magnetic feedback is unnecessary. Standard construction with a single smooth shaft lets gears or pulleys be coupled directly, while regular leadwires terminated in a receptacle simplify wiring and preserve cabinet space. That operating style is common on indexers, feeders, and compact transfer mechanisms where commanded step counts are used instead of closed-loop correction. Because it is a hybrid stepper motor, it supports precise incremental movement at low speed with stable holding behavior between commanded steps.

The motor fits a NEMA 23 frame and is 78.8 mm long, yet it delivers a holding torque of 1.39 Nm from its two-stack rotor. Each phase draws 6.5 A through A-type windings whose 0.42 Ω resistance and 0.8 mH inductance set the current rise time for microstep drives. Radial and axial bearings accommodate 90 N and 60 N respectively, so couplings can carry moderate belt tension without extra outboard supports. Detent torque is limited to 0.05 Nm, reducing mid-band resonance, and step accuracy remains within ±1.5% across the full 200-step revolution. The housing suits clean, dry environments where air circulation cools the winding to its 95 °C surface threshold, and the single shaft exits only from the front face because this model does not include a feedback device.

Electrical insulation is rated Class B, 130 °C, with insulation resistance of 100 MΩ and dielectric strength of 340 VDC. This insulation system helps keep the winding electrically separated from the frame during normal operation. A mass of 1.13 kg gives the laminated core useful thermal capacity during short overloads, and the motor operates in ambient temperatures from -20 °C to +40 °C. The IP23 enclosure guards against finger contact and limited water spray. The electrical cycle is expressed as 200 full steps per revolution, allowing direct integer division for many lead screw pitches. The smooth, single-ended shaft helps align couplings when the motor is installed in index tables, dispensers, or small gantries.