Product Description:

The M22NSXB-JDS-NS-02 is a two-phase stepper motor produced by Pacific Scientific for the POWERMAX II M Motors series. Intended for open-loop positioning tasks in compact automation cells, the unit translates pulse commands from a microstepping drive into incremental rotary motion and holds its position without feedback. Its enhanced design and standard NEMA mounting pattern allow direct installation on pick-and-place axes, small gantries, and laboratory dispensing stages where repeated, accurately indexed moves must be performed with minimal system complexity.

The motor occupies a NEMA 23 frame, so its 2.3-inch-square housing aligns with common brackets and gearheads. Each command pulse advances the shaft by 1.8 degrees, providing 200 steps per revolution for predictable linear travel when the motor is paired with a lead screw. Positioning error is limited to ±1.5% of a single step, helping control drift during high-cycle sequences. A low-inertia rotor reduces the torque required to change speed, shortening acceleration and settling times in rapid indexing applications.

The windings use Class B insulation rated for 130 °C, permitting continuous service without thermal breakdown under suitable operating conditions. The insulation system tolerates up to 340 V DC, enabling connection to high-bus-voltage microstepping drives. Reliable operation is maintained throughout an ambient temperature range of -20 °C to +40 °C, allowing the motor to function in chilled storage zones and heated production areas. A double-ended shaft passes through both end bells, providing attachment points for an encoder, manual handwheel, or secondary load while the primary shaft drives the mechanism. This shaft arrangement also permits access to the rear of the rotor without changing the motor’s standard mounting interface.