Upgrade your mechanical power transmission with the Z8 Expansion Sleeve that utilizes a powerful friction-based interference fit to lock shafts and hubs such as gears, sprockets, and pulleys.

How It Works: By tightening the high-strength locking bolts, the inner and outer tapered rings expand, generating a massive radial force. This force creates a tight, zero-backlash frictional bond capable of transmitting high torque and axial loads without the need for machining keyways.