Product Description:

The M21NSXD-LNF-NS-02 is a two-phase hybrid stepper motor produced by Pacific Scientific for the POWERMAX II M Motors series. Designed for direct NEMA mounting, it converts pulse trains into incremental rotation without requiring an internal feedback device, making it suitable for indexing tables, dispensers, and compact pick-and-place axes inside automated equipment. This arrangement works well in open-loop motion systems that rely on commanded step counts for positioning. Reliable operation is maintained at ambient temperatures from -20 °C to +40 °C.

With a NEMA 23 frame and enhanced construction, the motor occupies 57.15 mm of width and measures 52.3 mm in overall length while weighing 0.68 kg. A single lamination stack, D-type winding, and two-phase architecture produce a full-step angle of 1.8 degrees, which results in 200 steps per revolution with ±1.5% step accuracy. Electrical termination is through a receptacle that serves as the only connection point, and the absence of an encoder means position is inferred from commanded counts. The standard rotor design supports an axial shaft load of 58 N, permitting moderate thrust transfer along the motor axis. The windings use Class B, 130 °C insulation, with 100 MΩ resistance to ground and a 340 VDC dielectric limit.

A flat, single shaft that is 6.35 mm in diameter and 20.57 mm long couples the motor to gears or pulleys. Rotor inertia of 0.00001186 kg·m² supports quick acceleration without excessive drive current. Radial loading up to 89 N complements the axial capability for belt-tensioned layouts. The end bell follows the common NEMA pattern, and the receptacle connector helps keep cabling compact. These features make the motor suitable for compact machinery that needs simple stepper-based positioning without integrated feedback hardware.