Product Description:

Pacific Scientific manufactures the P22NRXA-LNF-NS-00, a member of the POWERMAX II P Motors series. This two-phase, hybrid stepper converts command pulses into controlled 1.8-degree increments, delivering open-loop positioning for indexing tables, small actuators, and similar automation duties. It is supplied without feedback devices, so drive electronics operate it in open-loop mode. By combining a NEMA 23-sized frame with standard construction and a NEMA mounting pattern, the motor fits widely available brackets used in packaging, semiconductor, and laboratory equipment.

The motor contains two stator stacks and operates on two phases, giving 200 full steps per revolution at a step angle of 1.8 degrees, with an accuracy of ±1.5% for repeatable indexing. Its laminated core and standard rotor create 0.05 Nm of detent torque so the shaft resists drift when de-energized, while energized holding torque reaches 1.39 Nm for clamp or valve duties. Each phase draws 6.5 A through winding type A, and the 0.42 ohm resistance with 0.8 mH inductance allows modern microstepping drives to regulate current without excessive switching losses. The compact NEMA 23 frame and 78.8 mm body length balance torque density and installation space, while the 0.000025 kg·m² rotor inertia supports fast acceleration with controlled motion response.

The winding insulation is rated Class B, 130°C, has an insulation resistance test value of 100 megohms, and withstands 340 VDC, so the motor tolerates high-energy drive transients. It operates from -20°C to +40°C without derating, and the modest 1.13 kg mass helps conduct heat to the mounting surface. A single, flat-machined shaft measures 6.35 mm in diameter, extends 20.60 mm, and provides 12.7 mm of usable flat for rigid coupler engagement. Regular lead wires exit to a receptacle, simplifying cable connection at the machine interface.