5mm to 10mm Bore Rigid Shaft Coupler With Set Screw, Aluminum Alloy L25XD20, Rock Solid Connector For 3D Printers, Motors, CNC Machines And DIY Robots, Heavy Duty Shaft Coupler, 4 Pieces

Rigid shaft coupler 5-10 mm bore, 4-piece pack, 25x20 mm
✔️ 5-10 mm bore, 25 mm length, 20 mm OD, M4 screws, 4 pcs

This rigid shaft coupler is a solid aluminum alloy connector designed to join two shafts securely in motion systems like 3D printers, CNC machines, blowers, and DIY robotics setups. It uses a clamp-style, set-screw design for quick, dependable shaft coupling with minimal slop.

✅ Bore range: 5-10 mm (0.20-0.39 in)
✅ Length: 25 mm (0.98 in); OD: 20 mm (0.78 in)
✅ Material: aluminum alloy for strength and lightness
✅ Mounting: 2 or 4 screws; M4 set screws included
✅ Pack: 4 pieces in the set

💡 What is a rigid shaft coupler used for in motion systems? A handy, straightforward connector that locks two shafts together for direct torque transfer in compact drives. - Transfers torque with minimal backlash on compatible shafts - Maintains straight alignment between motor, gear, and pulley elements - Easy to install with a single piece clamp design - Works best with 5-10 mm shafts and M4 mounting hardware