What is "bushing"

Bush \Bush\, v. t. [imp. & p. p. Bushed (b[.u]sht); p. pr. & vb. n. Bushing.]

1. To set bushes for; to support with bushes; as, to bush peas.

2. To use a bush harrow on (land), for covering seeds sown; to harrow with a bush; as, to bush a piece of land; to bush seeds into the ground.

Bushing \Bush"ing\, n. [See 4th Bush.]

1. The operation of fitting bushes, or linings, into holes or places where wear is to be received, or friction diminished, as pivot holes, etc.

2. (Mech.) A bush or lining; -- sometimes called a thimble. See 4th Bush.

"metal sleeve fitted into a machine or hole," 1839, from gerundive of bush "metal lining of the axle hole of a wheel or touch hole of a gun" (1560s), from Middle Dutch busse "box" (cognate with the second element in blunderbuss).

n. 1 (context mechanical engineering English) A type of bearing, a cylindrical lining designed to reduce friction and wear inside a hole, often used as a casing for a shaft, pin or hinge. 2 (context mechanical engineering English) An elastic bearing used as a type of vibration isolator, commonly made of rubber. An interface between two parts, damping the movement and the energy transmitted. 3 (context mechanical engineering English) A threaded bushing, is a fastener element that is inserted into an object, usually to add a threaded hole in a softer or thin material. 4 (context electrical engineering English) A lining for an opening through which a conductor passes, providing insulation and mechanical protection for the conductor. 5 An adapter for joining pipes of different size.

1. n. an insulating liner in an opening through which conductors pass

2. a cylindrical metal lining used to reduce friction [syn: cylindrical lining]

A bushing or rubber bushing is a type of vibration isolator. It provides an interface between two parts, damping the energy transmitted through the bushing. A common application is in vehicle suspension systems, where a bushing made of rubber (or, more often, synthetic rubber or polyurethane) separates the faces of two metal objects while allowing a certain amount of movement. This movement allows the suspension parts to move freely, for example, when traveling over a large bump, while minimizing transmission of noise and small vibrations through to the chassis of the vehicle. A rubber bushing may also be described as a flexible mounting or antivibration mounting.

These bushings 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 bushing from being crushed by the fixings which hold it onto a threaded spigot. Many different types of bushing designs exist. An important difference compared with plain bearings is that the relative motion between the two connected parts is accommodated by strain in the rubber, rather than by shear or friction at the interface. Some rubber bushings, such as the D block for a sway bar, do allow sliding at the interface between one part and the rubber.

In electric power, a bushing is an insulated device that allows an electrical conductor to pass safely through a grounded conducting barrier such as the case of a transformer or circuit breaker.

Bushing may refer to:

• Bushing (bearing), a type of plain bearing
• Bushing (electrical)
• Bushing (isolator), a mechanical device used to reduce vibrations
• Threaded bushing, a metal sleeve with screw threads