Product Description:

The M22NSXA-LDN-NS-02 stepper motor is produced by Pacific Scientific within the POWERMAX II M Motors series. It uses an enhanced construction type that improves thermal paths, while the no-feedback option keeps the package simple for open-loop drives. A double-shaft configuration permits drive components on either end, and the rotor remains standard for predictable torque curves. With winding type A, the phase resistance and inductance are suited to common microstepping amplifiers. The motor serves as a compact positioner in pick-and-place systems, small gantries, and indexing tables where repeatable incremental motion is required.

Mechanical proportions follow NEMA conventions. The frame occupies NEMA 23 space, spans 57.10 mm across the square face, and centers on a 66.67 mm bolt circle for direct attachment to gearboxes or brackets. A pilot diameter of 38.1 mm with a ±0.05 mm tolerance aligns the housing, while 5.08 mm mounting holes accept standard cap screws. Two magnetic stacks boost detent torque while keeping the housing short. The rotor inertia is 0.0000252 kg·m². Each full step covers 1.8 degrees, and with 200 increments per revolution and ±1.5% accuracy, the motor provides fine positioning without an encoder. Continuous service is supported from -20 °C to +40 °C, and the assembled weight remains 1.13 kg to reduce load on linear slides.

Electrical insulation follows Class B limits, is rated to 130 °C, and is verified at 100 megohms with a 340 VDC test potential, allowing installation on unisolated metal frames. The motor withstands 58 N of axial thrust and 89 N of radial belt tension, which is adequate for light pulleys or lead screws. Overall body length is 78.7 mm, and the smooth shaft measures 6.35 mm in diameter with a 19.1 mm extension suited to couplings. A receptacle provides the single electrical connection.