Aluminum Flex Shaft Coupler - 5mm to 8mm

A machined aluminium flexible shaft coupler for connecting a 5mm shaft to an 8mm shaft. The spiral-cut design provides slight flexibility to accommodate minor misalignment between shafts, reducing binding without introducing rotational backlash — making it suitable for precision CNC work.

Key Features

• Flexible Spiral Cut – Accommodates minor shaft misalignment while maintaining rotational precision
• Zero Backlash – Flexible in X/Y/Z linear axes but rigid in rotation, suitable for CNC applications
• Double Set-Screws – Two set-screws per side for secure shaft attachment
• Machined Aluminium – Lightweight and durable construction

Specifications

• Shaft Size 1 – 5mm
• Shaft Size 2 – 8mm
• Material – Machined aluminium
• Set-Screw Size – 2mm Allen key (hex wrench)
• Set-Screws – 4 total (2 per side)

Ideal For

• Connecting stepper motors to lead screws
• CNC machines and 3D printers
• Robotics and precision mechanical assemblies