Product Description:

The T22NRLE-LNN-NS-00 is a hybrid stepper motor produced by Pacific Scientific in the T High Torque Motors series. In industrial automation, it converts pulse sequences from an indexer or motion card into incremental shaft rotation, allowing open-loop positioning where feedback devices are unnecessary. With its two-phase winding and compact NEMA-23 frame, the unit provides high holding torque relative to size, making it suitable for small pick-and-place axes, printer stages, or metering pumps that demand repeatable step accuracy without the overhead of a servo system.

The electrical values show how quickly the motor can build flux and how much energy it can safely dissipate. Each phase draws 1.5 A DC, a value that affects power-supply sizing and driver transistor ratings. The terminal resistance of 2.9 ohms limits current rise at standstill and influences copper loss. Winding inductance of 17 mH controls current rise during rapid micro-stepping, affecting audible noise and mid-range resonance. A nominal holding torque of 1.98 N-m lets the shaft resist external disturbance when energized, so fixtures or lead screws remain fixed between moves. The full-step angle of 1.8° sets the basic angular resolution, yielding 200 discrete steps per revolution before micro-stepping is applied.

Mechanical and thermal values describe the motor’s operating profile. Rotor inertia is 0.0000395 kg·m², giving moderate acceleration capability for light loads without overshoot. Unpowered detent torque of 0.042 N-m provides a small passive retentive force that is helpful during power loss. The shaft can tolerate a radial load of 67 N, while the 6.35 mm diameter and 20.6 mm extension simplify coupling to gears or pulleys. A bolt circle of 2.625 in matches standard NEMA-23 mounts, and the 77.7 mm length by 56.9 mm width keeps the package compact. Continuous operation is permitted until the winding reaches 100 °C, a temperature limit that helps protect insulation integrity over the motor’s lifecycle.