15mm To 20mm Bore Aluminum Flexible Shaft Coupler 40mm Diameter 50mm Length Spider Joint For 3D Printers CNC Machines And Servo Motors High Torque With Polyurethane Damping Ring Rock Solid Durable Aluminum Alloy Construction For Easy Mounting And Precise

Aluminum flexible shaft coupler, 15-20mm bore, 40mm dia 1pc
✔️ 40mm dia, 50mm length, 15-20mm bore, polyurethane damping

The spider-style aluminum flexible shaft coupler connects motors to drive shafts with solid torque capacity and built-in vibration damping. Built for high-torque trans teams in hobby and industrial setups, it’s a staple in 3D printers, CNC machines, and servo-driven systems to improve smoothness and accuracy.

✅ Total diameter: 40 mm (1.57 in); length: 50 mm (1.97 in)
✅ Bore range: 15-20 mm (0.59-0.79 in) to fit common shafts
✅ Material: aluminum alloy body with polyurethane damping ring for vibration control
✅ High torque capability with reduced shaft stress and misalignment during transmission
✅ Ideal for servo motors, stepper motors, 3D printers, CNC routers, engraving mills
✅ Wide model range: D20-L25 to D40-L66, bores 4-22 mm available

💡 What is a flexible shaft coupling used for in precision motion systems like 3D printers and CNC machines?

Handy for keeping drives smooth and reliable by handling small misalignments and absorbing vibration.

- absorbs angular and parallel misalignment while transmitting torque - dampens noise and shock to extend bearing life - suits compact drives in hobbyist and professional setups - helps maintain precision during rapid startup and shutdown