NTN Constant Velocity Joints (CVJ)

Expansion sleeves are keyless locking devices used to create secure, friction-based shaft-to-hub connections. By tightening bolts, tapered components generate uniform radial pressure, enabling a firm mechanical fit without the need for keyways. This design minimizes shaft stress, simplifies assembly and disassembly, and ensures high concentricity and transmission efficiency across various rotating systems.

With a compact design and strong torque transmission capability, expansion sleeves provide excellent resistance to vibration and shock. They are suitable for a wide range of industrial applications, including wind power systems, conveyor drives, paper machinery, metallurgical equipment, and packaging lines. The keyless configuration is especially valuable in systems requiring frequent installation or maintenance, improving operational stability and service life.