Product Description:

Pacific Scientific manufactures the P22NRFB-LNN-NS-00 hybrid stepper motor. It belongs to the POWERMAX II P Motors series. As a NEMA-frame motion device, it advances machinery by discrete angular increments to control positioning stages, metering pumps, and small conveyors in automated equipment.

The motor’s two-stack winding draws 4.6 A DC per phase when wired in parallel, a value that allows rapid torque rise without overloading typical microstepping drives. Its holding capability reaches 214 oz-in, keeping loads fixed during dwell periods. Electrical losses are limited by a phase resistance of 0.38 ohms and a thermal path rated at 4.5 °C/Watt, while the 2.1 mH phase inductance shapes current slew for smoother microstep operation. Step resolution is fixed at 1.8 degrees, yielding 200 full steps per revolution with a ±1.5% accuracy band. Eight flying leads form the regular lead-wire connection style, so different series or parallel coil connections can be used. The unit carries no feedback device, so open-loop control is expected. Standard construction is combined with NEMA mounting and a smooth single shaft, and the 0.2500 in diameter surface accepts couplings without keying. Overall mass is 2.5 lb, which minimizes reflected inertia while still providing enough thermal mass for continuous duty.

At just 3.10 in long, the NEMA 23 frame houses a standard rotor whose inertia is 0.0036 oz-in-s², giving predictable acceleration when coupled to light linear stages. Bearings tolerate 13 lb of axial load and 20 lb of radial load, so small pulleys or leadscrews can be mounted without auxiliary supports. Insulation is supported by a Class B, 130 °C thermal rating, 100 Megohms of insulation resistance, and a 340 Vdc dielectric withstand. The permissible ambient range of -20 °C to +40 °C matches typical cabinet temperatures, and the B-coded winding maintains torque consistency across that span.