2 Pack Flexible Beam Couplings 4mm To 8mm Shaft, 19mm Outer Diameter, 25mm Length, M4 Screws, Great For 3D Printers CNC Machines DIY Encoders And Servo Systems, Ideal For Model Shaft, Motor Guide And Spindle Drives

Two-Pack Flexible Beam Couplings for 4 mm to 8 mm shafts
✔️ 4-8 mm shaft range, 19 mm OD, 25 mm length, M4 screws

These compact two-piece beam couplings are used to connect drive shafts to followers in small CNC machines, 3D printers, encoders, servos, and hobbyist rigs. They tolerate slight misalignment and damp vibration for smoother torque transfer in tight setups.

✅ 4 mm to 8 mm shaft compatibility with M4 screws
✅ Outer diameter 19 mm and length 25 mm for compact footprint
✅ Aluminum alloy, anodized silver finish, good at high temps
✅ Off-axis offset compensation reduces wear and noise
✅ Pack of 2 pcs for quick swaps in DIY projects

💡 What is a flexible beam coupling used for in small CNC and 3D printer systems?

- Handy for linking motors to spindles, encoders, or gears with minor misalignment - Absorbs vibration to improve stability and prolong drive life - Easy to install with standard M4 screws on common shaft sizes - Great for hobbyist CNCs, 3D printers, servo drives, and encoder work