P22NRXC-LNN-NS-00 Pacific Scientific
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The Pacific Scientific P22NRXC-LNN-NS-00 is a stepper motor from the POWERMAX II P Motors series with a frame size of NEMA 23 and a holding torque of 1.43 Nm. It features a smooth, single shaft with a diameter of 6.35 mm and offers a step angle of 1.8 degrees, achieving 200 steps per revolution. This motor has an IP23 protection class, weighs 1.13 kg, and operates with a rated current of 3.1 A.
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Product Description:
The P22NRXC-LNN-NS-00 is a hybrid stepper motor built by Pacific Scientific for the POWERMAX II P Motors series. It translates pulse trains into open-loop motion by using a standard C winding on a two-stack rotor, making it suitable for indexing tables and compact actuators. Because it is a hybrid stepper design, position is established by commanded step sequences rather than a continuously corrected servo loop. This operating method suits compact axes that need repeatable incremental motion. The motor follows NEMA 23 dimensions, mounts on a standard face, and drives loads through a single smooth 6.35 mm shaft. Leadwire connections that terminate in a receptacle simplify wiring, and the IP23 enclosure keeps overall weight near 1.13 kg.
At stall, the stack develops 1.43 Nm of holding torque, giving the motor firm resistance to shaft movement at standstill. Each phase draws 3.1 A, and the 1.56 Ω resistance with 3.9 mH inductance set electrical time constants that affect driver slew rates. A single pulse advances the rotor 1.8 degrees, delivering 200 discrete steps per turn with a step accuracy of ±1.5%. The C winding passes a 500 VDC dielectric test for one minute and sustains 100 MΩ insulation resistance at 340 VDC within Class B (130 °C) limits. The motor operates from −20 °C to 40 °C and allows a maximum case temperature of 95 °C.
The shaft accepts axial forces up to 60 N and radial forces up to 90 N, which supports typical pulley and belt loads. Dynamic response is influenced by the rotor inertia of 0.025 × 10⁻³ kg·m², so small accelerations can be achieved with modest drive current. The standard shaft arrangement supports direct coupling to lead screws, timing pulleys, or small gear reducers in compact assemblies. Overall package length is 78.8 mm, allowing the motor to fit compact gearheads without overhanging bearings. Because no encoder or other feedback device is fitted, position verification must be handled at the controller level.
