Blue Aluminum Alloy Coupling 5x8MM – HE-30 Grade for 3D Printers & CNC Machines

The Blue Aluminum Alloy Coupling 5x8MM is a precision-engineered mechanical component designed to connect shafts with bore diameters of 5mm and 8mm. Crafted from high-grade HE-30 aluminum alloy, this coupling ensures durability, lightweight performance, and corrosion resistance, making it ideal for both 3D printers and CNC machines.

Its anodized blue finish not only enhances aesthetics but also adds to the wear resistance of the component. The coupling is equipped with two grub screws that securely clamp the shafts in place. An Allen key is included for easy installation. Whether you’re prototyping or running production, this coupling delivers reliability, alignment, and smooth torque transmission.

🔧 Key Features

• High-strength HE-30 grade aluminum alloy construction
• Bore sizes: 5mm (d1) and 8mm (d2) for versatile shaft compatibility
• Ideal for 3D printers, CNC routers, laser engravers, and robotics
• Precision-machined body with anodized blue finish
• Dual grub screws for firm shaft grip
• Allen key included for quick assembly

📐 Technical Specifications

📌 Applications

• 3D printer Z-axis and extruder drive systems
• CNC router and stepper motor coupling
• Laser engraving machines
• Precision robotics and automation
• Mechanical prototyping and shaft alignment

💡 Why Choose This Coupling?

The Blue Aluminum Alloy Coupling 5x8MM provides a secure and vibration-free connection between shafts of differing diameters. Its premium aluminum body and precise machining ensure strong torque transmission and longer service life — all while enhancing the look of your machine with a professional finish.

📦 Package Includes

• 1 × Blue Aluminum Alloy Coupling 5x8MM
• 1 × Allen Key