P21NRLA-LNN-NS-00 Pacific Scientific
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The Pacific Scientific P21NRLA-LNN-NS-00 is a stepper motor from the POWERMAX II P Motors series, featuring a NEMA 23 frame size with standard construction and standard rotor type. It offers a holding torque of 0.81 Nm, rated current per phase of 5.6 Amps, and a step angle of 1.8 degrees for 200 steps per revolution. The motor has IP23 protection, an operating temperature range of -20°C to +40°C, and a smooth, single shaft with a 6.35 mm diameter.
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Product Description:
The Pacific Scientific POWERMAX II P Motors series includes the P21NRLA-LNN-NS-00 hybrid stepper motor. Designed as a two-phase actuator, it converts pulse commands from indexers or micro-stepping drives into precise shaft movement for industrial automation such as small gantries, labeling heads, or valve positioners. The motor follows NEMA dimensional conventions, allowing it to fit standard 23-frame mounting arrangements, while its lead-wire connection style supports direct wiring to drive outputs. A single-stack rotor and the absence of an onboard feedback device keep the assembly compact, and the 200-step-per-revolution design supports accurate open-loop positioning.
The electromagnetic profile starts with a holding torque of 0.81 Nm, giving static load support when the windings are energized. Unpowered detent torque is only 0.03 Nm, so back-driving forces remain low when the drive is idle. Motion occurs in 1.8 degrees increments, and 200 full steps keep positional error within ±1.5%. Each phase draws 5.6 A, while the 0.46 Ω resistance helps limit copper loss. An inductance of 0.8 mH supports high step rates without requiring excessive bus voltage, and the NEMA 23 frame with a 52.4 mm body fits common brackets. A four-lead series connection, type A windings, and a regular lead-wire exit simplify hookup, and Class B insulation rated to 130 °C protects the coils during long duty cycles.
Mechanically, the shaft tolerates 60 N of axial load and 90 N of radial load, making it suitable for belt tensioners or small gears. Protection is rated IP23, so the motor should be installed in clean, dry enclosures and operated within an ambient range of -20 °C to +40 °C. Rotor inertia of 0.000012 kg·m² supports rapid acceleration, and the smooth single 6.35 mm shaft eases coupling to driven components. Overall mass is 0.68 kg, which helps keep moving assemblies light. The motor also uses a standard rotor and single-stack core, and an insulation resistance of 100 MΩ verified at 340 Vdc indicates good dielectric integrity.
Frequently Asked Questions about P21NRLA-LNN-NS-00:
Q: What is the holding torque of the P21NRLA-LNN-NS-00 motor?
A: This model has a holding torque of 0.81 Nm.
Q: What are the shaft details for the P21NRLA-LNN-NS-00?
A: The shaft on this motor is single, smooth, and has a diameter of 6.35 mm.
Q: How many steps per revolution does the P21NRLA-LNN-NS-00 provide?
A: The step angle is 1.8 degrees, providing 200 steps per revolution.
Q: What frame size does the P21NRLA-LNN-NS-00 motor use?
A: It is built with a NEMA 23 frame size for compatibility with standard mounting systems.
Q: What is the maximum axial shaft load for the P21NRLA-LNN-NS-00?
A: The maximum axial shaft load supported by this model is 60 N.
