Product Description:

The M22NSLS-LDN-M1-02 is a two-phase stepper motor manufactured by Pacific Scientific and supplied within the POWERMAX II M Motors series. The unit is intended to index machine elements in compact automation platforms. It translates digital pulse trains from a drive into defined rotary steps for conveyors, small gantries, and metering devices.

This model is built on the NEMA 23 frame, so its mounting holes and pilot diameter match common 57 mm brackets. Each electrical pulse moves the rotor through 1.8 degrees, yielding 200 steps per revolution and allowing fine incremental positioning when paired with microstepping drives. Positional repeatability stays within ±1.5 % of a full step, and the stator is wound for 2 phases that may be wired through the supplied four-lead series harness. The motor employs a two-stack lamination core, an enhanced construction rating, and a standard rotor to balance torque density with thermal rise. A double-ended 6.35 mm smooth shaft supports direct coupling to encoders or loads without secondary machining, and the NEMA mounting style simplifies interchange in multi-axis assemblies.

The winding system carries Class B 130°C insulation tested to 340 Vdc, with a measured resistance of 100 Megohms to minimize leakage current. Operation remains continuous from -20°C to +40°C, after which derating is required. Bearing design handles 13 lb of axial thrust and 20 lb radial load, suiting belt drives or light gearheads. A provision for encoder mounting is already machined into the endbell, so closed-loop feedback can be added without enlarging the footprint. The smooth shaft modification reduces key-seat stress, while the four-lead series connection and double-shaft layout permit flexible wiring and accessory placement during installation.