8mm To 8mm Bore Rigid Shaft Coupling With Set Screw, 22mm Length, 14mm Outside Diameter, 45 Steel, Built To Last, Tough As Nails, For 3D Printers, CNC Machines, Stepper Motors And DIY Robotics

Rigid 8mm-to-8mm Shaft Coupling with Set Screws, 22mm
✔️ 8mm to 8mm bore, 22mm length, 14mm OD

This rigid shaft coupling connects two 8 mm shafts for precise torque transfer. It's widely used on 3D printers, CNC machines, stepper motors, and DIY robotics to drive components with minimal play.

✅ Material: steel (45 steel) for high torque
✅ Connection diameter: 8mm to 8mm
✅ Total length: 22mm; Outside diameter: 14mm
✅ Includes 1 coupling with 4 M4 screws; single-piece assembly

💡 What is a rigid shaft coupling used for in CNC and 3D printing setups?

This handy connector locks two shafts together to transmit torque with minimal play.

- high torque transfer between motors and gears
- easy clamp-style setup with set screws
- 8mm to 8mm bore compatibility
- low inertia and precise alignment for stepper drives
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