Product Description:

The T22NRLG-LNN-NS-00 is a hybrid stepper motor built by Pacific Scientific and placed in the T High Torque Motors series. Designed for closed-loop or open-loop positioning, it translates digital pulse trains into incremental rotation so that conveyors, pick-and-place gantries, or index tables achieve repeatable angular motion without external feedback. Its NEMA-23 frame supports higher torque density than earlier designs, enabling direct drive of modest loads while keeping overall machine envelopes compact.

The electrical circuit for each phase draws 2.5 A DC, a level used for power-stage sizing in the drive electronics and for estimating copper temperature rise in the windings. Line resistance of 1.23 Ω sets the static voltage required for rated current and influences low-speed torque. An inductance of 7.1 mH limits di/dt, shaping how quickly current can be commutated as step frequency climbs. The rotor advances in discrete increments of 1.8°, which means 200 full steps per revolution and straightforward micro-stepping ratios for finer resolution. When energized but stationary, the motor can resist external motion with a nominal holding torque of 1.98 N·m, which helps keep fixtures or slides in position without mechanical brakes. For comparison, the unenergized detent torque is only 0.042 N·m, so magnetic locking is minimal when the coils are off. The 77.7 mm body length and 56.9 mm square front flange match standard mountings, simplifying retrofit into existing equipment.

The dynamic profile is shaped by a rotor inertia of 0.0000395 kg·m², allowing rapid acceleration while helping limit overshoot in lightly damped axes. Shaft bearings tolerate an axial load up to 111 N and a radial load of 67 N, letting the motor carry small pulleys or lead screws without auxiliary supports. A shaft diameter of 6.35 mm and a 20.6 mm shaft length provide a common interface for couplings while leaving enough engagement depth for set screws. These load limits support compact motion axes that use direct coupling or light belt-driven elements. Proper coupling alignment helps maintain smooth rotation during repeated indexing cycles.