M21NSXC-LNN-NS-03 Pacific Scientific
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The Pacific Scientific M21NSXC-LNN-NS-03 is part of the POWERMAX II M Motors series and features a NEMA 23 frame size with enhanced construction. This two-phase motor has a single smooth shaft, no feedback encoder, and a step angle of 1.8 degrees with 200 steps per revolution. It uses Class B insulation rated for 130°C and operates within a temperature range of -20°C to +40°C.
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Product Description:
The M21NSXC-LNN-NS-03 hybrid stepper motor is manufactured by Pacific Scientific within the POWERMAX II M Motors series. In industrial automation, this motor provides open-loop incremental motion so indexing tables, pick-and-place arms, and small mechanical stages can advance a fixed angle for every control pulse without relying on a feedback device. This operating method suits compact motion axes that need repeatable positioning from a simple pulse command. Because the motor operates without an encoder, positioning depends on the commanded step sequence and on keeping the mechanical load within the motor’s usable torque range.
The motor uses a NEMA 23 frame, allowing installation in standardized 57 mm mounting patterns. Internally, the stator is wound for 2 phases, which establishes the electrical sequence used to divide one revolution into discrete increments. Each increment spans 1.8 degrees, so one full rotation requires 200 steps per revolution. Step accuracy is limited to ± 1.5%, which helps keep positional error low in light assembly, metering, and test-fixture duties. The single smooth shaft simplifies coupler selection, and the receptacle-style connector groups the phase leads so wiring is handled through one plug rather than individual solder joints.
Thermal and dielectric limits support continuous service. The windings use Class B insulation rated to 130 °C, and insulation resistance is 100 Megohms to help reduce leakage to ground. The conductors can withstand up to 340 Vdc without arcing, which accommodates back EMF during rapid deceleration. Reliable operation is permitted between -20 °C to +40 °C, matching typical factory environments without external heating or chilling. The motor uses an enhanced construction type with a single magnetic stack and a standard rotor, which balances torque output and inertia for mid-speed motion. A NEMA face mount keeps fastener spacing consistent across the series, and the C winding code matches inductance and resistance to widely used current-mode step drives.
Frequently Asked Questions about M21NSXC-LNN-NS-03:
Q: What frame size does the M21NSXC-LNN-NS-03 stepper motor use?
A: This model is built to the NEMA 23 frame size, making it compatible with a wide range of industrial mounting arrangements.
Q: What type of shaft and shaft modifications are featured on the M21NSXC-LNN-NS-03?
A: The M21NSXC-LNN-NS-03 is supplied with a smooth, single shaft configuration.
Q: What is the step angle and steps per revolution for the M21NSXC-LNN-NS-03 motor?
A: This motor operates with a step angle of 1.8 degrees, delivering 200 steps per revolution.
Q: What is the insulation rating for temperature and voltage on this model?
A: The M21NSXC-LNN-NS-03 features insulation rated for Class B (130°C) and 340 Vdc.
Q: Does the M21NSXC-LNN-NS-03 motor provide any feedback or encoder option?
A: No feedback device is included, as this particular unit ships with no encoder option.
