Applications:
Expansion sleeves (also known as locking assemblies or shrink discs) are widely used in mechanical engineering and power transmission systems. They are commonly applied in:
- Belt and chain drives
- Gear connections
- Couplings and pulleys
- Wind power generation equipment
- Conveyor systems
- Heavy machinery and mining equipment
- Paper, steel, and packaging industries
Advantages:
- No Keyway Required:
Expansion sleeves allow for keyless shaft-hub connections, avoiding stress concentrations caused by keyways. - Easy Installation and Disassembly:
They are simple to mount and dismount without damaging the shaft or hub. - High Torque Transmission:
Capable of transmitting large torques due to the uniform pressure distribution. - Precise Positioning and Alignment:
Offers high concentricity, improving mechanical performance and reducing wear. - Corrosion Resistance:
Most are made from high-quality steel or stainless steel, suitable for harsh environments. - Reusability:
They can be reused multiple times without losing performance if handled properly.
When to use expansion sleeves
Expansion sleeves provide frictional shaft–hub connections without keys—useful for repeatable positioning and high torque on pulley and coupling hubs.
Specify bore tolerance, hub material, and tightening sequence when ordering.
Need specifications or a quote? Contact NDS with your drawing, application, and quantity — our engineering team supports OEM and export orders worldwide.
