Shaft-hub connection

A shaft-hub connection refers to the mechanical connection between a shaft and a hub, which is often found in machines and drive systems. This connection ensures the transmission of torques and forces and ensures that the shaft and hub work synchronously.

Importance of the shaft-hub connection in mechanical engineering

In mechanical engineering, the shaft-hub connection is of great importance as it directly influences the functionality and efficiency of drive systems. A precise and robust connection prevents failures, minimizes wear and ensures optimum machine performance.

Types of shaft-hub connections

There are different types of shaft-hub connections, which are selected depending on the application and requirements:

1. Press connections: These connections use the fit between the shaft and hub to ensure a firm connection. They are easy to produce and offer high strength.
2. Wedge connections: By inserting a wedge into a groove, a positive connection is created that can transmit high torques.
3. Keyway connections: This widely used connection uses a feather key that engages in corresponding grooves in the shaft and hub and ensures reliable power transmission.
4. Clamping connections: These connections use clamping rings or clamping bushes to create a friction-locked connection that is easy to assemble and disassemble.
5. Shrink-fit connections: By heating the hub and then cooling it, a firm connection is created between the shaft and hub.

Factors influencing the shaft-hub connection

The performance and reliability of a shaft-hub connection depend on various factors:

• Material properties: Choosing the right materials for the shaft and hub is crucial for the strength and durability of the connection.
• Accurate fit: A precise fit between shaft and hub is necessary to minimize play and wear.
• Assembly procedure: The correct assembly and disassembly of the connection influences the stability and service life of the connection.
• Operating conditions: Environmental influences such as temperature, humidity and loads must be taken into account in the design.

Application examples of the shaft-hub connection

Shaft-hub connections are used in numerous applications:

• Vehicle construction: Transmission of torques in gearboxes and drive trains.
• Mechanical engineering: Connection of drive shafts with wheels, gears and pulleys.
• Power engineering: Used in turbines, generators and pumps for the transmission of mechanical energy.