Rigid Screw Coupling For 3D Printers 3mm To 4mm Shaft Connector L18mm D12mm Steel Joint Durable Coupler Set Includes 8 M4 Screws And 2 Pieces Shock Absorbing Low Noise Vibration Resistant

Durable shaft coupler for 3D printers, 3-4mm bore
✔️ 3-4mm bore, 18x12mm body, 2 pcs, 8 M4 screws included

This sturdy shaft coupler connects motors and driven shafts in 3D printers, CNC machines, and DIY projects. Made from high-strength stainless steel, it tolerates heat and wear, delivering reliable torque transfer with reduced noise and vibration.

✅ Inner Diameter: 3-4 mm (0.12-0.16 in)
✅ Total size: 18x12 mm (LxD) 0.71x0.47 in
✅ Material: Stainless steel for durability and heat resistance
✅ Package includes: 2 shaft connectors with 8 M4 screws

💡 What is a shaft coupling used for in 3D printers and CNC machines?

A handy overview: shaft couplers join driving and driven shafts to transfer torque while damping vibrations.

- transfers torque between shafts to keep drive train smooth
- dampens shocks and reduces noise for longer-lasting operation
- easy installation with standard M4 screws and compact design
- ideal for motors, servo systems, and CNC setups