Product Description:

The P21NSXC-LNN-NS-03 is a two-phase stepper motor manufactured by Pacific Scientific within the POWERMAX II P Motors series. Built for incremental motion control, the unit translates digital pulse trains into precise shaft rotation, so it is used in pick-and-place stations, light conveyor indexes, and other position-based automation tasks. In service, a compatible stepper drive energizes the windings in sequence so the shaft advances in predictable increments and can stop accurately at commanded positions. Because it is a stepper design rather than a servo, motion is achieved through commanded step sequences instead of closed-loop speed regulation.

The motor has a holding torque of 0.82 Nm, which helps the rotor maintain position while energized at standstill. The device fits the compact NEMA 23 frame, which suits standard 23-frame mounting brackets that use the same hole pattern. Each phase draws a rated current of 3.5 A, so the drive must supply that level continuously during peak load conditions. The windings have a phase inductance of 2.3 mH, which affects current rise time and high-speed response. With a step angle of 1.8 degrees, the rotor moves in uniform increments that support repeatable positioning in medium-resolution applications. This electrical balance supports consistent torque production at low and moderate speeds when the drive current is set correctly.

The motor operates across an ambient range of -20°C to +40°C, which suits typical enclosure climates in machine tools and packaging equipment. Thermal integrity is supported by Class B, 130°C insulation, along with 100 megohms resistance and 340 Vdc dielectric strength. Internally, one magnetic stack and a standard rotor keep inertia low while still providing 200 full-step positions per revolution within ±1.5% accuracy. The unpowered detent torque is limited to 0.03 Nm, which reduces cogging during manual back-driving or when the shaft is repositioned by external motion. The configuration also includes standard construction, a single smooth shaft, NEMA receptacle connections, no feedback encoder, two energized phases, and C-type windings. These features suit applications that use open-loop step control and straightforward electrical interfacing.