Product Description:

The M22NRFA-LNF-NS-02 is a hybrid stepper motor produced by Pacific Scientific within the POWERMAX II M Motors series. As a NEMA-compatible unit, it converts incremental input pulses from an indexer or drive into controlled rotary motion, making it useful for positioning tables, labelers, and pick-and-place axes that demand open-loop accuracy without external feedback. Its hybrid design supports precise step-by-step motion in compact automation systems where consistent indexing is required.

The motor is built on a NEMA 23 frame and its body length measures 3.10 in, allowing it to fit compact equipment while still housing the dual-stack rotor assembly. Each electrical pulse advances the shaft by 1.8 degrees, which provides repeatable indexing for feed drives and small conveyors. Full-step movement corresponds to 200 steps per revolution, giving the motor a predictable angular increment during open-loop operation. Positional deviation is limited to ±1.5 % of one step, so accumulated positioning error remains controlled during repeated motion. Eight flying leads simplify wiring to unipolar or bipolar drives, and the enhanced lamination stack improves torque density without changing mounting geometry.

Electrical insulation withstands up to 100 Megohms of resistance and a hipot test voltage of 340 Vdc, reducing the chance of winding-to-frame leakage in noisy control cabinets. Thermal stability is maintained from −20 °C to +40 °C, matching typical factory environments when mounted to a heat-sinking aluminum face. The single output shaft uses a 0.2500 in diameter with a ground flat, giving couplings a positive drive surface while keeping inertia low. The motor also uses a Class B insulation system, a 2.25 in across-flats housing, and a standard rotor design for medium-torque applications that require repeatable open-loop positioning.