Two Pack Aluminum Flexible Couplings 8mm to 12mm Bore Suited for Stepper Motors and Ball Screw Ends Great for 3D Printers and CNC Machines D30L40 30mm OD 40mm Long Flexible Jaw Spider Style Ultra Durable and Precision Ready
✔️ 8mm to 12mm bore, 30mm OD, 40mm long; 2-pack for easy setup
These aluminum shaft couplings provide a rigid, plum-shaped connection between motors and ball screws or lead screws, common in 3D printers and CNC machines. They handle torque transfer and vibration dampening for reliable, precise motion.
✅ Aluminum alloy, plum-shaped shaft coupler for durability and rigidity
✅ Bore options: 8mm to 12mm to fit common stepper and ball screw shafts
✅ Outer diameter 30mm, total length 40mm for compact, sturdy coupling
✅ 2-pack for convenient multiple-axis setups in 3D printers and CNCs
✅ Oxidation-treated surface for long-lasting wear resistance and smooth torque transfer
💡 What is a shaft coupling used for in CNC machines and 3D printers?
Short answer: It connects motors to screws and helps keep motion aligned for precise results.
- shaft coupler links motor shaft to leadscrew or ball screw for precise motion
- reduces misalignment and vibration, boosting print quality and machining accuracy
- fits common bore sizes like 8mm and 12mm for many stepper or servo motors
- aluminum construction with oxidation finish resists wear in demanding runs