P21NSXD-LNN-NS-02 Pacific Scientific
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The Pacific Scientific P21NSXD-LNN-NS-02 is part of the POWERMAX II P Motors series and features a NEMA 23 frame size with standard construction. This stepper motor has a holding torque of 0.77 Nm, IP23 protection class, and operates with a rated current of 1.5 Amps. It has a step angle of 1.8 degrees, 200 steps per revolution, and weighs 0.68 kilograms.
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Product Description:
The P21NSXD-LNN-NS-02 is a two-phase stepper motor manufactured by Pacific Scientific and supplied under the POWERMAX II P Motors series. It is intended for industrial automation where discrete step motion is needed, translating controller pulses into fixed rotor increments to index tooling, valves, or small conveyors. This format suits compact axes that need pulse-driven positioning without the complexity of a servo feedback system. The motor uses a standard NEMA mounting interface and a plug-in receptacle so that installation and connection remain straightforward.
Electrical performance is based on a step angle of 1.8 degrees, which combines with 200 full steps per revolution to yield repeatable positioning with a ±1.5% step accuracy. When the windings are energized, the rotor can hold up to 0.77 Nm before motion, while a detent torque of 0.03 Nm produces residual cogging with no current applied. Each of the two phase windings draws a continuous 1.5 A and presents 5.22 Ω of DC resistance, which governs copper loss during stall. The motor's D-type winding has an inductance of 10.3 mH, which limits current rise time as pulses shorten. Electrical insulation is Class B (130 °C) with a 340 Vdc dielectric rating and 100 MΩ resistance, allowing safe operation on standard microstepping drives. A single rotor stack and standard construction keep inertia low, helping the motor accelerate rapidly.
The motor uses a NEMA 23 frame and weighs 0.68 kg, while presenting a single smooth shaft in the standard orientation. The smooth shaft is intended for clamp-style couplings in applications that do not require a keyed drive connection. The housing is rated IP23, permitting installation inside guarded enclosures that are free of direct water spray. The allowable ambient range of -20 °C to +40 °C matches many factory floors without auxiliary heating or cooling. A receptacle connector carries the phase leads, and the motor mounts by its standard NEMA flange. Because no feedback encoder is fitted, motion is controlled open loop.
Frequently Asked Questions about P21NSXD-LNN-NS-02:
Q: What is the holding torque provided by the P21NSXD-LNN-NS-02 stepper motor?
A: This model offers a holding torque of 0.77 Nm.
Q: What is the shaft configuration for the P21NSXD-LNN-NS-02 motor?
A: The shaft is a single smooth shaft, suitable for direct coupling with equipment.
Q: How many steps per revolution does the P21NSXD-LNN-NS-02 support?
A: It operates with a step angle of 1.8 degrees, delivering 200 steps per revolution.
Q: What insulation class and temperature rating does the P21NSXD-LNN-NS-02 have?
A: The insulation class is rated as Class B with a maximum temperature of 130°C.
Q: What level of environmental protection is provided by the P21NSXD-LNN-NS-02?
A: The P21NSXD-LNN-NS-02 comes with an IP23 protection class, offering limited dust and water resistance.
