Product Description:

The M22NSXA-LDN-M1-02 stepper motor is built by Pacific Scientific within the POWERMAX II M Motors series. Enhanced construction and a NEMA 23 frame allow this two-phase motor to deliver consistent incremental motion in indexing tables, pick-and-place units, and small gantries. Its double smooth shaft supports couplings at either end, while an internal "A" winding layout works with standard unipolar or bipolar drive schemes. With a standard rotor and two magnetic stacks, the motor provides open-loop positioning without feedback and includes a threaded provision for an encoder when closed-loop operation is required.

The motor has a step angle of 1.8 degrees, so one full revolution is divided into 200 discrete steps. Its ±1.5% step accuracy keeps cumulative error inside tight tolerance bands for moderate travel lengths. The shaft diameter is 6.35 mm, which pairs with readily available couplers while resisting bending during torque transfer. Radial bearings withstand continuous side loading up to 89 N, and the thrust path tolerates axial forces of 58 N. Low rotor inertia helps rapid acceleration, and the enhanced construction maintains stiffness across the 57.10 mm frame width and the 66.67 mm mounting bolt circle. No. 2-56 UNC-2B threads on a 46.02 mm encoder bolt circle simplify sensor attachment through the rear receptacle connector.

The laminated stator length of 78.7 mm keeps overall mass to 1.13 kg, aiding compact machine layouts. The windings use Class B insulation that endures 130 °C, provide insulation resistance of 100 MΩ, and tolerate up to 340 Vdc from the drive. Operation remains stable between -20 °C and +40 °C ambient, so no derating is needed in most indoor environments. The NEMA mounting style aligns with standard brackets, and the insulation system helps protect controller interfaces from leakage currents.