High Torque Planetary Gearbox 50 To 1 Speed Reducer For 19 mm Shaft 750W 80 mm Servo Motor With Low Backlash Under 12 Arc Minutes Ideal For CNC Lathe Machines 3500RPM

High Torque 50:1 Planetary Gearbox for 19mm Servo Motors
✔️ 50:1 gear ratio, backlash ≤12 arcmin, 136.5mm body length

This planetary gearbox is designed to mate with an 80mm servo motor, delivering a 50:1 reduction to boost torque for precise CNC work. Its compact 90x90 mm frame fits tight spaces on lathes, mills, engravers, and similar equipment, while keeping noise low and motion smooth.

✅ Gear ratio: 50:1 (50:1 reduction) for strong torque
✅ Input shaft: 19 mm (0.75 in); output shaft: 20 mm (0.79 in)
✅ Frame size: 90x90 mm (3.54x3.54 in)
✅ Body length: 136.5 mm (5.38 in)
✅ Backlash: ≤ 12 arcmin at full load
✅ Full-load efficiency: 94%
✅ Max input speed: 6000 rpm; rated input: 3500 rpm
✅ Max torque: 122 N·m
✅ Material: 20CrMnTi steel with carburizing for wear resistance
✅ Includes: 1 gearbox unit and 4 screws

💡 What is a planetary gearbox used for in CNC machines?

A handy, general answer for common use cases in CNC setups.

• Reduces motor speed while increasing torque for precise machining
• Fits in tight spaces thanks to the compact planetary design
• Provides low backlash for repeatable positioning
• Improves efficiency and lowers heat under heavy loads