Product Description:

The M22NRXA-LDF-NS-00 is a hybrid stepping motor manufactured by Pacific Scientific for the POWERMAX II M Motors series. It is intended for open-loop or microstepped positioning axes where repeatable incremental motion is required. The motor follows the NEMA mounting convention, so it integrates easily into standardized brackets and geartrains. A double-ended shaft allows couplings, pulleys, or secondary transducers to be attached on either side of the rotor without extra hardware, and the regular lead-wire connection style keeps panel wiring straightforward. That arrangement suits indexing tables, feeders, and linear stages that rely on commanded steps for motion control.

The mechanical envelope is compact, with a body length of 3.10 in, yet the frame still meets the NEMA 23 outline so that common clamps and flanges fit without re-machining. The torque-carrying shaft is ground to 0.2500 in diameter and has a machined flat to reduce slip when secured with a set screw. Inside the laminations, the rotor advances in discrete steps of 1.8 degrees, which produces 200 full-step positions per revolution. A 2.625 in bolt circle and a 1.500 in pilot diameter center the motor on the load and help keep radial runout low. These proportions make the motor easy to fit into compact mechanical assemblies that use standard NEMA 23 mounting hardware.

Electrical insulation measures 100 MΩ and withstands up to 340 VDC, matching Class B (130 °C) windings used with typical drive bus voltages. The winding set operates over an ambient range of -20 °C to +40 °C, so the same unit can be installed in chilled storage conveyors or heated process lines. Position fidelity is maintained within ±1.5 % of the theoretical step angle, allowing tight-tolerance moves when paired with appropriate gearing or lead screws. The enhanced construction uses a standard rotor and an A-type winding, and the motor is configured for mid-torque applications without an integrated feedback device. This thermal and motion performance supports steady operation in systems that depend on accurate incremental positioning.