18mm To 18mm Aluminum Shaft Coupling Flexible Spider Coupler D40 L66 For Stepper Motor 3D Printer CNC Router Engraving Milling Machine Aviation Aluminum Body Heavy Duty Build Low Backlash Precision Anodized Finish
✔️ 18-18mm bore, 40mm Ø, 66mm length, aviation aluminum, low backlash
This heavy-duty shaft coupling connects motors to drive shafts in CNC routers, 3D printers, engravers, and milling machines. Its plum-shaped spider and aviation aluminum body deliver strong torque transmission with shock absorption and vibration damping.
✅ Bore: 18-18 mm / 0.71-0.71 in
✅ Diameter: 40 mm / 1.57 in
✅ Length: 66 mm / 2.6 in
✅ Material: aviation aluminum with anodized finish
✅ Spider: elastomer (T-PUR) for longer life
✅ Torque handling and vibration damping for drive trains
💡 What is a flexible shaft coupling used for in CNC and 3D printer drive trains? This handy connector keeps motors running smoothly, absorbs shocks, and aligns shafts under load. - Absorbs torsional vibrations to protect motor and belts - Allows small angular and radial misalignment without backlash - Provides high torque transmission for drive trains - Works with 18-18mm bore spider couplers