M22NSLB-LNN-NS-02 Pacific Scientific
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The Pacific Scientific M22NSLB-LNN-NS-02 is a stepper motor from the POWERMAX II M Motors series with a NEMA 23 frame size and enhanced construction. It features a holding torque of 253 oz-in, operates with a rated current of 2.3 A DC, and has a step angle of 1.8 degrees. The motor has a smooth single shaft, weighs 2.5 lb, and is built with Class B insulation rated up to 130°C.
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Product Description:
The M22NSLB-LNN-NS-02 is a two-phase hybrid stepper motor produced by Pacific Scientific as part of the POWERMAX II M Motors series. Designed for incremental motion tasks, it translates incoming pulse trains from an indexer or microstepping drive into fixed angular steps that position tooling, gates, or metering devices without a feedback loop. The unit uses an enhanced design with a standard rotor and a smooth, single-ended output shaft, allowing direct coupling to timing pulleys or lead screws in compact automation frames.
The motor develops a holding torque of 253 oz-in, giving machinery the ability to resist static loads when energized. To achieve that torque, the winding draws a rated phase current of 2.3 A DC, while the copper network presents a phase resistance of 1.52 Ω; these parameters support drive selection and power-stage sizing. A phase inductance of 6.8 mH shapes the electrical time constant, affecting current rise during high-speed sequences and influencing microstepping smoothness. Each full step advances the rotor by 1.8 degrees, a geometry that, together with the ±1.5% step accuracy, delivers accurate indexing in pick-and-place, labeling, or conveyor applications. The dual-stack design reduces detent ripple while maintaining the 4.5 °C/W thermal path of the laminated frame.
Mechanical integration follows the NEMA 23 frame convention, so the motor mounts to common 1.86-inch square pilot flanges and mates with standardized gearheads. With 200 discrete steps per revolution, the mechanism can obtain 0.001-inch linear resolution on a 5-TPI lead screw without electronic subdivision. The assembly withstands axial forces up to 13 lb and radial forces up to 20 lb, supporting use in belt-driven or pinion engagements. Continuous service is supported from -20 °C to +40 °C, matching typical enclosure conditions, while Class B insulation permits internal temperatures to reach 130 °C. The laminated housing weighs 2.5 lb, easing gantry or end-effector mounting, and its four-lead series wiring simplifies connection to bipolar drives using standard cable harnesses.
