Product Description:

The M22NRXB-LNN-NS-00 is a hybrid stepper motor built by Pacific Scientific for the POWERMAX II M Motors series. As a NEMA-dimension unit, it converts discrete pulse commands from an indexer or drive into precise incremental motion, allowing conveyors, pick-and-place heads, and small positioning stages to index repeatably without feedback devices. The motor’s two-stack construction and enhanced magnet layout raise torque density, letting OEMs achieve compact axis designs while maintaining accurate open-loop positioning in automated assembly, packaging, and laboratory equipment.

This model occupies the NEMA 23 frame with a pilot diameter of 38.1 mm and a bolt circle of 66.67 mm, so it fastens directly to standard brackets. Its static holding capability reaches 1.79 Nm, produced through a B-type winding fed by a regular leadwire connection; the rotor can therefore support axial loads up to 58 N and radial loads of 89 N without loss of registration. Each step advances 1.8 degrees, giving 200 full-step positions per revolution and a step accuracy of ±1.5 %. The insulation system is rated Class B, provides 100 MΩ resistance, and withstands 340 Vdc; combined with 4.5 °C/W thermal resistance, the motor remains within limits across the –20 °C to +40 °C operating window.

With a detent torque of 0.12 Nm, the rotor resists minor disturbances when power is off, limiting position drift in vertically oriented axes. The laminated standard rotor carries an inertia of 0.025 kg·m² ×10⁻³, an attribute that allows rapid acceleration when paired with micro-stepping drives yet minimizes overshoot at stop. Overall body length is 78.7 mm and mass is 1.13 kg, factors that simplify mounting on linear carriages where weight budgets are tight. A smooth 6.35 mm single shaft is supplied, and the regular receptacle exit keeps wiring clear of moving parts while supporting repeatable motion without an encoder.