Size 57mm (NEMA 23) Eccentric Stepper Spur Geared Motor 0-100 RPM Max. 5 N-m

This Size 57mm (NEMA 23) eccentric stepper spur geared motor (57HB-SG series) combines a bipolar stepper motor with a spur gearbox to deliver holding torque up to 3.0 N·m and output speeds from 0 to 330 RPM, with gear ratios ranging from 3:1 to 100:1. The motor operates at a rated current of 2.8 A/4.2 A on a 24–60 VDC/AC supply, features Class B insulation and IP54 protection, and is available in body lengths of 56 mm or 76 mm depending on the base motor torque (1.2 N·m or 2.0 N·m), with total lengths from 88 mm to 118 mm and weights of 1.3–1.9 kg. Its eccentric spur gearbox design provides a compact, cost-effective high-torque solution for heavy-duty positioning tasks in CNC routers and engravers, automated production lines, packaging machinery, industrial robotics, and other automation systems requiring reliable torque multiplication and smooth low-speed operation. The matched drive is M556C. Please specify the model number in the order note.

Size 57mm (NEMA 23) 1.2 N-m with Spur Planetary Gearbox

Size 57mm (NEMA 23) 2.0 N-m with Spur Planetary Gearbox

The red part's torques are limited by the continuous torque of the maximum load of the gearbox.