Z2 Expansion Sleeve designed for modern high-performance machinery and utilizes the principle of mechanical interference fit to create a powerful, rigid connection between the shaft and the hub (such as gears, pulleys, or flywheels).

How It Works: The assembly consists of an inner ring, an outer ring, and high-strength tightening bolts. When the bolts are tightened, the opposing tapered surfaces generate massive radial pressure. This pressure “expands” the assembly to grip the shaft and the hub bore simultaneously, transmitting high torque and axial loads purely through friction.