P22NRXB-LNF-NS-00 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific P22NRXB-LNF-NS-00 is a stepper motor from the POWERMAX II P Motors series featuring a NEMA 23 frame size and standard construction. It has a holding torque of 1.51 Nm, operates with a rated current of 4.6 A per winding, and comes with IP23 protection. This motor has a shaft diameter of 6.35 mm, a step angle of 1.8 degrees, and weighs 1.13 kg.
Internal Product Review
The P22NRXB-LNF-NS-00 is a Pacific Scientific POWERMAX II P stepper motor in a NEMA 23 frame with 2-phase operation. A 1.51 Nm holding torque and 1.8-degree step angle support accurate, stable positioning under load. IP23 protection and Class B insulation make this motor a strong choice for reliable industrial motion control.
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Product Description:
The P22NRXB-LNF-NS-00 is a hybrid stepper motor produced by Pacific Scientific within the POWERMAX II P Motors series. It converts digital pulse commands from an indexer or drive into discrete shaft movement for positioning tables, pick-and-place heads, and similar automation axes. This model uses second-generation POWERMAX architecture to provide high torque density and consistent step accuracy for light and medium-duty motion systems found in assembly cells and laboratory equipment. Its hybrid stepper design supports repeatable incremental motion in applications that need stable low-speed positioning and straightforward pulse-based control.
Mechanical output includes a holding torque of 1.51 Nm, enabling the shaft to resist back-driving when the windings carry the rated current of 4.6 A in bipolar parallel mode. Each electrical step advances the rotor by 1.8 degrees, so the motor completes 200 full steps per revolution, and the NEMA 23 frame concentrates the magnetics needed to maintain this accuracy within the specified ±1.5% tolerance. A lamination stack height of 78.7 mm and a detent torque of 0.05 Nm support dynamic response, while the phase inductance of 2.1 mH balances switching speed against current ripple when driven by microstepping amplifiers. That combination supports fine positioning in indexing systems that require precise, repeatable shaft movement.
System designers must also consider inertia, thermal limits, and environmental protection. The rotor moment of inertia is 0.000025 kg·m², which helps minimize settling time during rapid index moves, and the housing is rated IP23 for installation in filtered control cabinets where falling water is not expected. Continuous duty is allowed between -20 °C and +40 °C, provided the case temperature stays below the 95 °C surface limit supported by Class B insulation at 340 Vdc. Copper losses are moderated by a phase resistance of 0.76 Ω, while the flat single-ended shaft, 6.35 mm in diameter, simplifies coupling to gears or pulleys without additional machining.
