6mm To 1/4 Inch Bore Rigid Shaft Coupler With Set Screws, 25mm Length, 18mm Outer Diameter Aluminum Alloy Shaft Connector For 3D Printers, CNC Machines, Stepper Motors, DIY Robotics, 2 Pack
✔️ Bore: 6mm (0.24 in) to 1/4in; Length: 25mm (0.98 in); OD: 18mm (0.70 in); Aluminum
These rigid clamp shaft couplers are aluminum alloy connectors designed to lock tightly onto motor and driven shafts, transmitting torque with minimal backlash. They’re commonly used in 3D printers, CNC machines, DIY robotics, and other motion-control setups to secure bearings and sprockets on a shaft.
✅ Outer diameter 18mm (0.70in); bore range 6mm (0.24in) to 1/4in; length 25mm (0.98in)
✅ Aluminum alloy construction for light weight and rigidity
✅ Single piece set screw clamp design with M4 screws included
✅ Top-tight type supports 2 or 4 screws for secure mounting and minimal backlash
💡 What is a rigid shaft coupler used for in hobby CNC and 3D printer builds? This handy connector keeps motor and driven shafts aligned and transmits torque with minimal play. - tight shaft alignment improves motion accuracy - easy setup with a single piece clamp design - compatible with bore 6mm to 1/4in and 25mm length