P22NRXB-LNF-NS-00 Pacific Scientific
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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.
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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.
Frequently Asked Questions about P22NRXB-LNF-NS-00:
Q: What is the holding torque of the P22NRXB-LNF-NS-00 stepper motor?
A: The P22NRXB-LNF-NS-00 has a holding torque of 1.51 Nm in bipolar parallel drive mode.
Q: How many steps per revolution does the P22NRXB-LNF-NS-00 provide?
A: This motor has a step angle of 1.8 degrees, resulting in 200 steps per revolution.
Q: What is the shaft configuration and size on the P22NRXB-LNF-NS-00?
A: It is built to the NEMA 23 frame size standard and features a flat single shaft of 6.35 mm diameter.
Q: What insulation properties does the P22NRXB-LNF-NS-00 motor offer?
A: The insulation is rated as Class B with a maximum surface temperature limit of 95°C and an insulation resistance of 100 Megohms.
Q: Does the P22NRXB-LNF-NS-00 come with integrated feedback or encoder options?
A: P22NRXB-LNF-NS-00 offers no feedback encoder; it operates as an open-loop stepper motor.
