High Torque Nema 17 Stepper Motor With Planetary Gearbox For Precision DIY CNC Projects And Robotic Motion 99.05 To 1 Gear Ratio 0.018 Degree Step Angle Bipolar 4 Wire Current 1.68A Resistance 1.65 Ohm StepperOnline Ready

High Torque NEMA 17 Stepper with Planetary Gearbox 99:1
✔️ 1-unit pack, 0.018° step, 99.05:1 gearbox, 4 Nm torque

This high torque NEMA 17 stepper motor features a built-in planetary gearbox for compact, high-torque motion control. It's ideal for precision positioning in DIY CNC projects, robotics, and automation setups where space is tight and torque at low speeds matters.

✅ Step angle: 0.018 deg
✅ Gearbox type: Planetary 99.05:1
✅ Holding torque: 4 Nm
✅ Frame size: 42x42 mm; shaft 8 mm
✅ Lead length: 500 mm; weight 630 g
✅ Rated current/phase: 1.68 A
✅ Phase resistance: 1.65 Ω
✅ Connection: Black A+, Green A-, Red B+, Blue B-
✅ Warning: use constant current or chopper drive before testing to prevent damage

💡 What is a high torque NEMA 17 stepper motor with planetary gearbox used for in precision automation and robotics?

In real-world setups, this combo delivers reliable, controlled motion at low speeds and high torque.

• Great for CNC axes requiring precise micro-step control
• Handy for robotic joints needing high torque at low speeds
• Works with constant-current or chopper drives to prevent motor damage
• Planetary gearbox adds compact size and smooth operation