P22NRXA-LSN-NS-02 Pacific Scientific
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The Pacific Scientific P22NRXA-LSN-NS-02 is a stepper motor from the POWERMAX II P Motors series. It features a NEMA 23 frame size with a holding torque of 1.39 Nm and operates with 2 phases and a standard smooth shaft. This motor has an insulation class B rated at 130°C, a rated current per winding of 6.5 A, and achieves a step angle of 1.8 degrees with 200 steps per revolution.
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Product Description:
The P22NRXA-LSN-NS-02 stepper motor is manufactured by Pacific Scientific and belongs to the POWERMAX II P Motors series. Designed for open-loop positioning tasks in machine tools, pick-and-place heads, and indexing conveyors, the unit converts digital step commands into incremental rotary motion without an internal feedback device. Its open-loop design suits applications where the controller tracks position by counting steps. As a standard-construction two-phase motor, it fits the NEMA mounting pattern commonly used across compact automation platforms.
Mechanical dimensions are set by its NEMA 23 frame, while a smooth shaft interface simplifies coupling to pulleys or gears. Two rotor stacks and two electrical phases give the motor a 200-step-per-revolution pattern, with each step covering 1.8 degrees. The holding torque is 1.39 Nm, and a residual 0.05 Nm detent torque remains when the coils are de-energized. The machine controller must supply up to 6.5 A per winding through regular lead wires that terminate in a receptacle. This current capacity lets the windings develop the magnetic field needed for rated holding performance at standstill. Winding type A has 0.42 Ω of resistance and 0.8 mH of inductance, values that affect driver voltage selection and current-rise rates. The NEMA mounting style and standard rotor design fit compact automation platforms that use common mounting hardware.
Environmental limits protect coil insulation and coatings. The housing is rated IP23, so it resists ingress and falling water during indoor service. The windings use Class B, 130°C insulation and maintain at least 100 MΩ resistance when tested at 500 V, while dielectric integrity withstands 340 Vdc. Continuous duty is allowed as long as external surfaces stay below 95 °C and ambient air remains in the range of -20°C to +40°C. The motor maintains step accuracy of ±1.5 % across that temperature span. Indoor installation is still important because the enclosure is not intended for washdown areas or direct outdoor exposure.
Frequently Asked Questions about P22NRXA-LSN-NS-02:
Q: What is the holding torque of the P22NRXA-LSN-NS-02 stepper motor?
A: The P22NRXA-LSN-NS-02 motor provides a holding torque of 1.39 Nm, supporting precise load control in NEMA 23 mountings.
Q: How many steps per revolution does the P22NRXA-LSN-NS-02 provide?
A: This model features a step angle of 1.8 degrees, resulting in 200 discrete steps per revolution for high positioning accuracy.
Q: What is the winding resistance value for the P22NRXA-LSN-NS-02?
A: The winding resistance of this motor is 0.42 Ω, influencing its current draw and heat generation during operation.
Q: What is the maximum allowed surface temperature for the P22NRXA-LSN-NS-02?
A: The P22NRXA-LSN-NS-02 is rated for a maximum surface temperature of 95 °C, ensuring safe operation within this limit.
Q: Does the P22NRXA-LSN-NS-02 motor include an encoder for feedback?
A: This stepper motor has a smooth shaft and does not include an encoder or feedback device.
