Flexible Shaft Coupling D20 L25 5mm To 8mm Bore Aluminum Spacer For 3D Printers CNC Machines And Servo Or Stepper Motors Zero Backlash High Torque Dope Durable Polyurethane Spacer Delivers Over Two Times Torque Versus Traditional Claw Couplings

Zero-Backlash Polyurethane Shaft Coupling 20x25mm (Single)
✔️ Bore 5-8 mm; OD 20 mm; length 25 mm; aluminum spacer

Compact and precise, this zero-backlash coupling links motors to shafts in 3D printers, CNC machines, and servo or stepper setups. It’s built with a durable polyurethane spacer for steady torque and vibration damping.

✅ Outer diameter 20 mm; length 25 mm; bore 5-8 mm
✅ Zero-backlash torque transmission for precise, smooth operation
✅ Durable polyurethane spacer delivers over 2x torque vs claw couplings
✅ Oil-resistant, electrically insulated elastomer; operating -20°C to 80°C
✅ Excellent vibration absorption and misalignment compensation

💡 What is a zero-backlash shaft coupling and why is it handy for CNC machines and 3D printers? This handy connector helps maintain precise motion with minimal play. - Reduces end play for accurate positioning
- Handles small shaft misalignment and dampens vibrations
- Improves torque transmission for servo and stepper motors