5:1 Planetary Gearbox Nema 17 Stepper Motor 1.68A for DIY CNC Robot 3D Printer

5:1 Planetary Gearbox for NEMA 17 Stepper Motors for DIY CNC and 3D Printers
✔️ 5.18:1 ratio, 1.68Nm torque, 0.35° step, 500mm lead

✅ Frame size: 42 x 42 mm (NEMA 17) with integrated planetary gearbox
✅ Motor length: 40 mm; gearbox length: 27.3 mm; shaft Ø8 mm
✅ Holding torque: 1.68 Nm; rated current: 1.68 A/phase; voltage: 12-24 V
✅ Gearbox: planetary, ratio 5.18:1, efficiency 90%, backlash ≤1°
✅ Lead length: 500 mm; 4-wire cable: Black A+, Green A-, Red B+, Blue B-
✅ Weight: 460 g; D-cut length 15 mm; shaft length 20 mm
✅ Connection: 4-wire bipolar; drive with constant-current or chopper controller
✅ Warning: avoid direct power supply; use a controller to test motor
✅ Pack size: 1 unit

Dimension	Metric	Imperial
Frame size	42 x 42 mm	1.65" x 1.65"
Motor length	40 mm	1.57"
Gearbox length	27.3 mm	1.07"
Shaft diameter	Ø8 mm	Ø0.315"
Shaft length	20 mm	0.79"
D-cut length	15 mm	0.59"
Lead length	500 mm	19.7"
Weight	460 g	1.01 lb

💡 What is the best use case for a NEMA 17 stepper with a planetary gearbox in DIY machines?

This handy setup delivers high torque at low speeds, making it ideal for small CNCs, 3D printers, and robotics. - Handy for low-speed, high-torque drives in compact setups - Improves positioning accuracy with low backlash and smooth motion - Compatible with standard 1.68 A per phase drivers and current control - Great for projects where space is tight and torque matters