Product Description:

The M22NRXA-JNN-NS-00 is a two-phase stepping motor manufactured by Pacific Scientific for the POWERMAX II M Motors series. It fits NEMA-pattern machinery and converts pulse trains from an indexer or micro-stepping drive into controlled shaft rotation. Because it operates as a stepping motor, commanded pulses are translated into incremental movement without requiring analog speed control. This supports precise open-loop positioning in assembly lines, packaging stations, and test rigs.

Its mechanical interface follows the NEMA 23 frame pattern with a motor width of 57.10 mm and an overall length of 78.7 mm. Motion is produced by a 1.8-degree step angle that yields 200 discrete steps per revolution and remains within a ±1.5% accuracy band. The low-inertia rotor, rated at 0.018 × 10⁻³ kg·m², uses an A-type winding across two phases, which supports rapid acceleration. Electrical insulation is Class B to 130 °C, with 100 MΩ resistance and a 340 Vdc withstand voltage. Connection is through regular leadwires terminated on a receptacle, and the motor uses enhanced construction for an improved thermal path. The unit is supplied without an integral encoder, so position is inferred from commanded step counts. A single 6.35 mm smooth shaft projects 20.60 mm for coupling to gears, pulleys, or flexible joints.

Two rotor stacks raise available torque while keeping the footprint compact. The motor withstands axial forces up to 58 N and radial loads up to 89 N, supporting direct belt tension or light thrust screws without bearing damage. Its mass of 1.13 kg eases installation on moving carriages, and continuous service is permitted between -20 °C and +40 °C, which matches typical enclosure climates. This operating range supports repeatable incremental motion in applications where closed-loop feedback is unnecessary.