Unique-Bargains 12mm to 8mm Aluminum Alloy Shaft Coupling Silver

12 mm to 8 mm shaft coupling

This aluminium-alloy flexible coupler joins a 12 mm shaft to an 8 mm shaft with zero backlash. Its one-piece metallic spring design absorbs parallel and angular misalignment as well as shaft end-play. Total length is 30 mm and outside diameter is 25 mm. Intended for light-to-medium torque drives such as encoders, lead screws and small pumps.

Check shaft sizes and torque needs

Verify that your driven and driving shafts measure exactly 12 mm and 8 mm respectively before ordering. Confirm the application torque falls within the light-to-medium duty range the spring element is designed for. Ensure there is 30 mm of axial space and 25 mm radial clearance at the joint. The coupling is supplied as a single unit without mounting hardware.

Suits precision motion and light drives

Builders of CNC axes, 3D-printer Z-axes, instrumentation rigs or small pump assemblies will value the backlash-free spring action. Users needing high-torque rigid transmission, keyed shafts or flanged mounting should look elsewhere. The fixed 12 mm to 8 mm bore combination also means it cannot adapt to other shaft diameters.