M22NRXD-LSF-SS-02 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific M22NRXD-LSF-SS-02 is a stepper motor from the POWERMAX II M Motors series with a NEMA 23 frame size, enhanced construction type, and flat shaft modification. It has a holding torque of 238 oz-in, step angle of 1.8 degrees, and can handle axial shaft loads up to 13 pounds. The motor features Class B insulation rated at 130°C and operates within a temperature range of -20°C to +40°C.
Internal Product Review
The M22NRXD-LSF-SS-02 is a POWERMAX II M stepper motor with a 1.8-degree step angle and 200 steps per revolution. NEMA 23 framing and 238 oz-in holding torque give this motor strong positioning capability for compact motion applications. Enhanced construction adds confidence in long-term operation, with ±1.5% step accuracy standing out as a key performance advantage.
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Product Description:
Pacific Scientific's M22NRXD-LSF-SS-02 belongs to the POWERMAX II M Motors series and is a hybrid stepper motor used for precise incremental positioning in industrial automation equipment such as pick-and-place heads, indexing tables, and small gantries. The device follows the NEMA mounting convention, letting it fit standardized frames without extra hardware, and its enhanced construction supports repeatable motion where open-loop accuracy is acceptable. The enhanced build uses a regular leadwire exit rather than a connector body, which keeps wiring simple and suits standardized installations.
The motor delivers a holding torque of 238 oz-in so actuators remain locked when drive current is steady but the shaft is not rotating. A full-step increment is 1.8 degrees, and with 200 discrete steps per revolution, the rotor advances predictably for open-loop positioning. Frame code NEMA 23 sets the 2.3-inch square face size that matches many compact stages. Two magnet stacks, shown by 2, increase active length and torque without changing the bolt pattern. The laminated rotor carries a moment of inertia of 0.0036 oz-in-s², allowing quick acceleration with limited overshoot. Step accuracy remains within ±1.5%, and the D-type winding balances current demand against winding heat during rated operation. The leadwire connection style simplifies termination, while a single receptacle helps keep cable routing straightforward. A flat shaft modification provides positive coupling, and the standard rotor type keeps the assembly straightforward.
The shaft can accept an axial load of 13 lb and a radial load of 20 lb, giving clear limits for belt tension or gear thrust. Continuous operation is specified from -20 °C to +40 °C, supported by Class B insulation that tolerates 130 °C winding temperature and 100 MΩ insulation resistance when tested at 340 Vdc. A thermal resistance of 4.5 °C/W and a 2.5 lb overall weight help dissipate heat in confined enclosures.
