Product Description:

The M22NRXE-LDF-HH-00 is a stepper motor produced by Pacific Scientific for the POWERMAX II M Motors series. It converts digital pulse trains from an indexer or PLC into controlled angular motion, making it suitable for pick-and-place axes, metering pumps, and light conveyors that demand repeatable positioning. Its step-based operation allows controlled incremental movement when the drive sequences the motor phases.

This model draws 1.64 A per phase, so a drive with similar continuous current capacity is required. A phase resistance of 2.71 ohms affects the voltage needed to reach that current, while the phase inductance of 10.1 mH influences how quickly the winding current can rise during microstepping. The motor delivers 1.60 N·m of holding torque, allowing fixtures or lead-screw loads to remain stationary when the windings are energized. With a step angle of 1.8 degrees, it produces 200 full steps per revolution, and the ±1.5% step accuracy keeps cumulative position error low over long moves. Two lamination stacks boost flux density for higher torque without increasing frame size, and a rotor inertia of 0.000025 kg·m² balances acceleration with position stability.

Mechanically, the unit fits the NEMA 23 frame and is 57.10 mm wide, with a body length of 78.7 mm and a mass of 1.13 kg, so it can mount on compact brackets without extra support. The double-ended shaft is 6.35 mm in diameter, has a 6.35 mm flat for setscrew coupling, and accepts 58 N axial or 89 N radial loads. A 66.67 mm bolt circle follows the NEMA mounting style, and lead wires exit through a receptacle. Class B insulation at 130 °C withstands a 340 V DC test voltage and has 100 MΩ resistance, while 4.5 °C/W thermal resistance and an allowed ambient span of −20 °C to +40 °C help keep winding temperature within limits. The motor also has enhanced construction, a standard rotor, and a flat-shaft modification.