50 To 1 Planetary Gearbox For Nema 17 Stepper Motors With 8mm Output Shaft And 20 Arcmin Backlash, 42 To 51mm Body, 5mm Input Shaft, 10.8mm Shaft Length, Fits CNC, 3D Printer And Lathe Projects, Includes 4 Screws, 2 Plugs, 1 Key

High-torque 50:1 Planetary Gearbox for NEMA 17 (single unit)
✔️ Includes 4 screws, 2 plugs, 1 key; Output Ø8mm shaft, 42-51mm body

This compact planetary gearbox is designed for NEMA 17 stepper motors, delivering high torque in a compact form factor. It's ideal for CNC, 3D printer, and small lathe projects where precise motion and reliable performance matter.

✅ Ratio 50:1 planetary gearbox for NEMA 17 motors
✅ Input shaft Ø5mm, length 10.8mm; Output shaft Ø8mm, length 21.5mm
✅ Body length 42-51mm; Installation hole distance 31mm
✅ Backlash ≤ 20 Arcmin; Efficiency ≥ 96%
✅ Nominal output torque 10 Nm; Moment permissible torque 20 Nm
✅ Nominal input speed 1000 rpm; Max input speed 2000 rpm
✅ Radial force 300N; Axial force 100N
✅ Waterproof IP54; Noise ≤ 55 dB; Working temp -10℃ to +90℃
✅ Weight 235 g; Includes 4 screws, 2 plugs, 1 key

💡 What is a pillow block bearing used for in CNC machines and automation setups? A handy shaft support that stabilizes rotation and extends equipment life. - Provides solid support for shafts in CNC, 3D printers, and automation - Improves alignment and minimizes wobble for precise motion - Sealed ball bearings protect against dust and moisture for durability - Fits common shaft sizes and mounting patterns for easy retrofits