Product Description:

The T21NLLC-LNN-NS-00 is a two-phase hybrid stepper motor manufactured by Pacific Scientific for the T High Torque Motors series. It translates digital pulse streams into discrete shaft positions, so automated equipment can perform repeatable indexing, light conveyor advancement, or precision tool alignment without closed-loop feedback hardware. Because it moves in fixed step increments, the motor suits compact motion axes that need consistent positioning from a simple pulse command.

The motor fits a NEMA 23 frame and measures 56.1 mm in body length, giving it a compact package for 57 mm mounting grids. A step angle of 1.8 deg divides each revolution into 200 full steps, providing predictable incremental motion. Each phase draws only 0.4 A DC, and the winding has an inductance of 209 mH and a resistance of 42.9 ohms at 40 °C, which helps keep the electrical load modest. The rotor can sustain a static holding torque of 1.27 N-m, while the unenergized detent torque of 0.021 N-m sets the breakout force when the windings are off. With two phases energized, the bearings tolerate a radial load of 67 N applied at the shaft midpoint, supporting moderate belt tension or small pinion overhang.

System responsiveness benefits from the minimal rotor inertia of 0.000024 kg-m², enabling rapid starts and stops in short-stroke motion profiles. Total assembly mass is only 0.7 kg, which helps limit moving weight on multi-axis platforms and reduces the load placed on slides or brackets in traveling assemblies. Axial thrust capacity reaches 111 N, so the motor can handle screw preload or vertical tooling forces without premature bearing wear. Continuous duty is permitted at ambient temperatures up to 40 °C, provided that current and load remain within the stated limits.