Carbon Bushings

Carbon bushings are also used as bush bearings, are made of Brass, Bronze, Copper, Aluminum, Carbide, steel materials. Tolerance is of 0.002mm, 0.003mm and Finishing can be done by Gold, Silver, Zinc, Nickel, Tin etc. These are used where oil and grease lubricants cannot applicable with corrosive liquids and gases, in such cases contamination by conventional lubricants are to be avoided.

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Detailed Description for Carbon Bushings

Carbon materials are versatile in the industrial world, which offers everything from softness to hardness. Normally, the carbon bushings are designed to absorb abrasion and shocks whilst keeping the transfer pump shafting pristine. Normally, the alloys of carbon bushing are made from graphite and metal which do not shrink, swell and have the capacity to survive in most harsh environment including liquid submersion, dusty environment, corrosive environment and high temperatures. Carbon bushings are well-known for its self-lubricating property, which is completely necessary to maintain and protect expensive components.

The alloy nature of carbon bushing offers strength and sturdiness for industrial grade machines. Besides, the graphite coating acts as self-lubricant which provides constant lubrication without even using grease and oil lubricants. The thin film of graphite deposited on the shaft reduces friction whilst the bushing absorbs shocks and abrasion and dissipates the heat.

Besides, carbon bushings are ideal for the machineries that operate at high temperature. The carbon bushings are chemical and oxidation resistant hence, it is widely used in chemical industries. Once the bushings are worn, it is extremely easy to replace with a new carbon bush.

Replacing a new bushing

When a carbon bushing wears down, it is not necessary to buy a new pump or new wet set end kit or a new impeller. All that is needed is to buy a new carbon bushing and install the bushing in the impeller.

The first step to install a new carbon bushing is the remove the damaged one with the help of arbor press. The second step is to install the bushing into the impeller using an arbor press. If there is a difficulty in pressing the bushing in, use any lubricant.

Benefits of carbon bushing



Chemical, oxidation and corrosion-resistant

Low density and low coefficient for thermal expansion

Compatible with food and pharmaceutical machineries

Superior thermal shock

Excellent mechanical strength and thermal shock

High temperature resistant


Chemical pumps

Cryogenic applications

Process pumps

Hot and cold water pumps

Food processing pumps


Corrosive environment




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Seema S

Understand XXX ratings Posted on 8/18/2016

The -XXX at the end of a bushing part number consists of the material grade designation. Since there are different types of material grades, it is important to find the appropriate material grade where the carbon bushing is used.

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