Cylindrical clamping bushes or tensioners have a conical inner and outer ring with clamping bolts. Despite having conical rings, these clamping bushes are described as "cylindrical" as they are fitted in a cylindrical bore.
When a cylindrical clamping bush is tightened with the prescribed torque, the inner ring is forced onto the outer ring, creating an interlocking connection between the disc and the shaft. This connection is free of play and is characterised by a high degree of rotational accuracy.
A cylindrical clamping bush is often used if a transferral of force is required in an application where a key way is not in use. Clamping bushes are very easy both to install and remove, and fitting them does not result in axial alignment errors.
There is a suitable clamping bush available for every application. Which type of clamping bush is most suitable is primarily determined by whether an application requires high or low torque. This also depends on whether the clamping bush has to be self-centring or not.
Clamping bushes also present an ideal solution for applications that require a high torque to be transferred via a small diameter.
Clamping bushes are usually made from cast iron or steel but are also available in other materials such as stainless steel if this is required by environmental conditions. Additionally, clamping bushes can be nickel plated or subjected to another form of surface treatment. This option is often used if the clamping bush needs to be resistant to moisture, rust formation or other (aggressive) conditions.
Clamping bushes can also be used in any application that requires a drive pulley. As a result, clamping bushes can also be found in almost every industry: (petro)chemicals, the food and drug industries, mechanical engineering, naval applications, agriculture and forestry as well as fisheries, for example.