Product Description:

Pacific Scientific’s P22NSXA-LSS-SS-05 is a two-phase hybrid stepper motor supplied within the POWERMAX II P Motors series. In positioning systems, the unit converts commanded pulse trains into precise incremental motion, allowing an indexer or drive to advance mechanical loads without closed-loop feedback. Its NEMA mounting pattern simplifies interchange with other motion stages used in pick-and-place, labeling, or light machining equipment.

The motor uses a NEMA 23 frame and a two-stack rotor to generate a holding torque of 1.39 Nm while keeping detent torque at 0.049 Nm for smooth low-speed starts. At full rated excitation, the parallel windings draw 6.5 A per phase and have a winding resistance of 0.21 Ω, a low value that limits resistive loss during dwell. Electrical time-constant behavior is tied to the phase inductance of 0.8 mH, supporting rapid current rise for high step rates. Each electrical cycle advances the rotor by 1.8 degrees, so the 200 discrete steps per revolution translate directly into linear travel when the motor is coupled to a lead screw. Thermal resistance of 4.5 °C/W describes the temperature rise per watt dissipated, and the Class B, 130 °C insulation system safeguards the windings under that thermal load.

Positional repeatability is kept within ±1.5 % thanks to the fine tooth geometry and a step accuracy value matched to the 1.8° increment. The insulation withstands 340 Vdc and has an insulation resistance of 100 MΩ, providing margin against leakage in high-humidity environments. Continuous service is allowed from -20 °C to +40 °C; outside that window, output torque is derated. Standard construction, a NEMA face-mount style, and a sealed receptacle connector speed installation. The motor uses an A-type winding, a standard rotor, and a two-phase architecture for compact open-loop motion.