Bushing

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bushing

[′bu̇sh·iŋ]
(design engineering)
(electricity)
(mechanical engineering)
A removable piece of soft metal or graphite-filled sintered metal, usually in the form of a bearing, that lines a support for a shaft.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Bushing

 

a cylindrical or conical part of a machine, mechanism, or instrument, which has an axial opening into which another part fits. Depending on their purpose, a distinction is made among bearing linings, fastener bushings, adapters, and so on.

A bearing lining is the part of a bushed sliding bearing in which the journal of a shaft or axle rotates. Such a bushing is fitted tightly into the housing portion and is sometimes also held with screws. It is made of antifriction materials (cast iron, bronze, graphite, or plastics), cast iron or steel with a thin layer of antifriction material on the friction surface, or a porous, self-lubricating metal ceramic. The use of bushings in sliding bearings reduces the consumption of costly and usually scarce antifriction materials (tin bronzes and babbitt metal) and simplifies repair by reducing it to the replacement of a worn bushing with a new one.

Fastener bushings secure the inner rings of antifriction bearings and other parts on the cylindrical portions of shafts and axles. They are made in a split form, with a conical outer surface, and are tightened by means of a nut.

An adapter is used to mount a tool with a conical shank in a lathe spindle that has a hole larger than the tool shank.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

bushing

1. In plumbing, a pipe fitting which is threaded on both the inside and the outside so that it can be used to connect two pipes (or other fittings) of different sizes.
2. A sleeve which screws into, or is otherwise fastened to, an opening in order to prevent mechanical abrasion or damage to a cable, rod, or the like, which passes through it.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
To minimize such vibrations, rubber parts are used extensively at mounting points for the cabin, such as engine mountings and suspension bushings. The vehicle development process increasingly requires performance testing, including rubber parts using CAE, prior to prototype evaluation.
Now the barrel needs to be sized to fit the adapter bushing. If you are using a barrel blank, it needs to be turned down to .750" its complete length (or as much of it as you will be using).
The 3/4" section of the barrel will be threaded at a rate of 16 threads per inch to match the threads in the bushing. Threads will be common "V" threads.
Few things are more frustrating than trying to reconnect broken track or install new track on your Bradley and not being able to line up the bushing holes just right.
The experimental setup was mounted for research of vibratory slipping of a shaft fastened in the bushing with interference, as in Fig.
Another reason for using bushings is to help prevent the possibility of the grip screws being run in too far and interfering with the magazine, and the bushings also provide more support or contact area for the grip panels.
Bushings, tools and retainer bars are replaced, while the piston, cylinder and pressure accumulator are inspected.
Although rotary bushings are a small but vital component of high-volume manufacturing, they can also be an Achilles' heel.
Tips, heaters, and thermocouples are replaceable without need for replacing the entire bushing. Additionally, the heater in the bushing provides a more uniform distribution of heat to the tips and more effective heating close to the gates.
Rockwell Automation introduces the DODGE QUANTIS reducer with twin-tapered bushings. This new bushing system option is available on both motorized shaft-mount and right-angle helical bevel products.
When BP discovered that the PTFE-bronze bushings on two of its reactor pumps were wearing out after just six months, they turned to a plastics specialist to solve the problem.