NEMA17 Stepper Motor, 4.8 kg-cm Holding Torque, Detachable Cable

This NEMA17-frame stepper motor delivers 4.8kg-cm of holding torque, a solid mid-range figure that covers a wide swath of 3D printer axis-drive and small CNC applications without stepping up to a bulkier NEMA23-class motor. Step angle is the standard 1.8 degrees per full step, with 5% accuracy, meaning 200 full steps complete one full shaft rotation - a figure that drivers like the A4988 or DRV8825 further subdivide into microsteps for smoother motion.

Electrically, the motor is rated for 2.5A per phase at a low 3.1V, with 1.25 ohms of winding resistance (plus or minus 10%) and 1.8mH of inductance per phase, figures a driver's current-limiting potentiometer needs to be set against to avoid overdriving or underdriving the motor's rated capacity. Four lead wires bring the two-phase winding out to the detachable 72cm cable, a genuinely convenient feature versus motors with permanently soldered-on wiring, since a damaged cable can simply be unplugged and replaced rather than requiring motor rewiring.

Mechanically, the motor uses a D-type shaft (5mm round, 4.7mm on the flattened D side) at 22mm length, the de facto standard shaft profile for NEMA17 motors that most 3D printer pulleys, couplers, and CNC lead-screw adapters are designed around. Standard NEMA17 42 x 42mm frame mounting means it drops straight into existing printer and CNC mounting brackets without needing custom adapters. Total weight comes in at 366 grams, and detent torque (resistance felt when unpowered) is a low 0.28kg-cm, meaning the shaft moves freely by hand when the motor isn't energized.

Builders replacing a worn stepper on a 3D printer or CNC axis, or adding a new motion axis to a DIY machine build, will find this NEMA17 motor a well-specified, standard-footprint choice compatible with the common driver boards (A4988, DRV8825, TB6600) already widely used in the hobby CNC and 3D printing space.