Locking Assemblies are precision-engineered, friction-locked shaft-hub connections designed to securely mount gears, sprockets, pulleys, brake discs, couplings, levers, flanges and other rotating machine components. By eliminating keys and keyways, they provide a backlash-free connection while maintaining excellent concentricity, high positioning accuracy and maximum shaft strength.

Installed directly between the shaft and the hub, the locking assembly consists of tapered inner and outer rings. When the clamping screws are tightened, radial contact pressure is generated across the entire mating surface, creating a powerful frictional connection. This enables the reliable transmission of high torque, axial and radial forces, as well as bending moments, making Locking Assemblies suitable for demanding industrial drive systems.

Compared with conventional shaft-hub connections such as shrink fits, keyed joints, interference fits or polygonal connections, Locking Assemblies simplify installation and removal while providing superior fatigue strength under alternating loads. Available in a wide range of standardized sizes and configurations, as well as customized designs, BIBUS Kft. supports customers in selecting the optimal solution based on torque, shaft dimensions, hub geometry and application requirements.

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Key Features

✔ Backlash-free shaft-hub connection

✔ High torque transmission

✔ Transmits axial and radial forces

✔ Suitable for bending moments

✔ Excellent concentricity

✔ Easy installation and removal

✔ Maintenance-free operation

✔ High fatigue strength

✔ Wide range of standard sizes

✔ Custom solutions available

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Why Choose Locking Assemblies?

✔ Eliminate keys and keyways

✔ High positioning accuracy

✔ Reliable frictional connection

✔ Fast assembly and disassembly

✔ Long service life

✔ Suitable for high-performance drive systems

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What Problems Do They Solve?

✔ Replacing keyed shaft-hub connections

✔ Transmitting high torques

✔ Improving concentricity

✔ Reducing backlash

✔ Simplifying machine assembly

✔ Increasing drivetrain reliability

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How Can We Help?

Our engineers support you with:

• Locking Assembly selection
• shaft-hub connection design
• torque and load calculations
• installation recommendations
• replacement of existing connection methods
• custom mechanical solutions