Bushing

Bushing is a mechanical fixing between two, possibly moving, parts, or a strengthened fixing point where one mechanical assembly is attached to another.

In a car or other vehicle's suspension, bushing are used to connect the various moving arms and pivot points to the chassis and other parts of the suspension.

In order to minimise vibration, wear and transmission of noise, they often incorporate flexible material such as rubber or polyurethane.

These bushes often take the form of an annular cylinder of flexible material inside a metallic casing or outer tube. They might also feature an internal crush tube which protects the bush from being crushed by the fixings which hold it on to a threaded spigot.

The use of a bushing can make assembly easier because it avoids the need for a separate nut and washer on the other side of the fixed material.

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