The Blue Aluminum Alloy Coupling 5x5MM is a precision-engineered shaft coupler designed for stepper motor connections in 3D printers, CNC machines, and robotics. Built from HE-30 grade aluminum, this coupling offers a perfect blend of strength, durability, and lightweight design — all in a visually appealing blue anodized finish. Featuring equal bore diameters of 5mm (d1 = d2 = 5mm), this rigid coupling securely connects two shafts using grub screws, providing strong rotational force transfer without backlash. It is ideal for transmitting torque between stepper motors and lead screws or drive shafts in motion control systems. The package includes an Allen key for quick and secure installation. �� Key Features HE-30 grade aluminum construction for strength and lightness 5mm bore on both ends for stepper motor and shaft connection Secure double grub screw locking system Blue anodized finish enhances appearance and corrosion resistance Precision machining for accurate alignment and low vibration Ideal for CNC, 3D printers, and motion systems �� Technical Specifications Product Name Blue Aluminum Alloy Coupling 5x5MM Coupling Type Rigid Shaft Coupler Bore Diameters d1 = 5mm, d2 = 5mm Material HE-30 Grade Aluminum Alloy Surface Finish Anodized Blue Locking Method 2 × Grub Screws Included Tool 1 × Allen Key Outer Diameter ~20mm Length ~25mm Weight ~12g Color Blue �� Applications 3D Printer Z-axis and lead screw coupling CNC stepper motor to shaft connection Robotic arms and actuators Laser engravers and DIY motion systems Automation and mechanical prototyping �� Why Choose This Coupling? The Blue Aluminum Alloy Coupling 5x5MM offers strong grip, reliable torque transmission, and stylish aesthetics. Built for durability and ease of use, it’s a perfect match for makers and professionals needing solid connections in their motion-driven machines. �� Package Includes 1 × Blue Aluminum Alloy Coupling 5x5MM 1 × Allen Key
