Heavy Duty Nema 23 Stepper Motor With 47 To 1 Planetary Gearbox For DIY CNC Mill Lathe Router, 40 Nm Holding Torque, 2.8 A Per Phase, Bipolar Four Wire Design, 60 By 60 Mm Frame, 56 Mm Motor Length, StepperOnline Brand Included

Heavy-Duty NEMA 23 Stepper with 47:1 Planetary Gearbox
✔️ 40Nm holding torque, 2.8A/phase, 60x60mm frame, 4-wire, single unit

This heavy-duty NEMA 23 stepper motor is built with an integrated planetary gearbox, delivering high torque at low speeds. It’s a solid choice for CNC mills, routers, and small lathes where precise, controllable motion is essential.

✅ Holding torque: 40Nm (2832 oz-in)
✅ Rated current/phase: 2.8A
✅ Frame size: 60x60mm / 2.36x2.36"
✅ Gearbox type: planetary, ratio 46.656:1, efficiency 73%
✅ Step angle: 0.039°
✅ Shaft diameter: Ø12mm, length 30mm
✅ Lead length: 500mm
✅ 4 leads (Black, Green, Blue, Red)
✅ Weight: 1.7kg

Parameter	Metric	Imperial
Frame Size	60x60 mm	2.36x2.36 in
Motor Length	56 mm	2.20 in
Gearbox Length	72 mm	2.83 in
Shaft Diameter	12 mm	0.47 in
Shaft Length	30 mm	1.18 in
Key-way Length	20 mm	0.79 in
Key-way Width	4 mm	0.16 in
Lead Length	500 mm	19.69 in
Weight	1.7 kg	3.75 lb

Heavy-Duty NEMA 23 stepper motor with integrated gearbox suits CNC machines that demand reliable, high-torque motion at modest RPMs. The compact 60x60mm frame helps squeeze performance into tight machine layouts, making it ideal for DIY CNC mills, routers, and light lathes.

💡 What is a stepper motor with planetary gearbox best used for in CNC machines?

- Handy for low-speed, high-torque CNC drives like hobby mills and routers - Great for compact setups needing strong torque with precise positioning - Requires a proper constant-current drive to prevent overheating and stall