Size 20mm (NEMA 8) Precision Stepper Planetary Geared Motor 15 arcmin 0-100 RPM Max. 6.0 N-m

This NEMA 8 precision stepper planetary geared motor (28HB-KGS series) integrates a 20 × 20 mm bipolar stepper with a round-flange planetary gearbox, delivering output torque up to 6.0 N·m and output speeds from 0 to 100 RPM with a low backlash of ≤15 arcmin. It features a standard 1.8° step angle, 4-lead bipolar wiring, rated phase currents of 0.6 A (depending on the motor stack length), and a driving voltage of 12–24 V DC, with a Φ6 mm flat output shaft for secure load coupling. Its round-flange gearbox and high torque density make it well suited to low-speed, high-torque positioning tasks in CNC routers and engravers, automated pick-and-place systems, packaging machinery, rotary indexing tables, and industrial robotics where compact size and repeatable accuracy are essential. The matched drive is M322C. Please specify the model number in the order note.

Size 20mm (NEMA 8) 0.02 N-m with KGS Series Planetary Gearbox

Size 20mm (NEMA 8) 0.04 N-m with KGS Series Planetary Gearbox

The read parts' torques limited by the continuous torque of the maximum load of the gearbox.