Stoker Bush

Listing ID #3994552

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Supply Type Manufacturer, Exporter, Supplier

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Carbon-graphite stoker bushes are used in travel grate of boilers for high temperature applications because metal bushes needs oil/grease lubrication, Oil/grease lubricants can start to melt,....

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Product Details

Carbon-graphite stoker bushes are used in travel grate of boilers for high temperature applications because metal bushes needs oil/grease lubrication, Oil/grease lubricants can start to melt, volatilize or carbonize above this temperature above about 350ºF (177ºC).. When this occurs, oil/grease-lubricated metallic bearings start to experience high friction, high wear, galling, vibration and even seizing. Moreover Metallic bearings can start to have problems of thermal expansions at high temperatures.

High Temperature Application

At high temperatures, plastic and composite bearings are subject to other problems such as softening, melting, deformation and may extrude out of the bearing area all together.

Carbon graphite bearings are ideally suited for applications at elevated temperatures because they rely on graphite for their self-lubricating properties. These solid homogeneous bearing materials do not contain oil/grease lubricants and they do not rely on oil/grease for lubrication. Thus, bearings manufactured from these carbon graphite materials are not subject to the shortcomings associated with petroleum-based lubricants and metals at elevated temperatures.

Because the carbon graphite matrix is very strong, it is not subject to the deformation, melting, or even softening that can occur with plastic bearings at these elevated temperatures.

Room Temperature Or Cold Temperature Dry Running Applications

Carbon-graphite bearings are also used for dry running at room temperature or cold temperatures. This occurs in applications where oil/grease lubricated metal bearings can not be used because:

Oil/grease lubricants volatilize in vacuum
At low temperatures, oil/grease lubricants can congeal, freeze, or solidify
Oil/grease lubricants volatilize in vacuum
At low temperatures, oil/grease lubricants can congeal, freeze, or solidify
In environments containing abrasive dust which is attracted by oil/grease lubricants to form a paste that increases bearing wear.
In high load, slow roll, start-stop equipment where oil/grease lubricants can be squeezed out of the rubbing surface and cause metal-to-metal contact.

Where the bearings need to conduct an electric current.

In sanitary or clean conditions where oil/grease lubricants could leak out and destroy product such as food, textiles, pharmaceuticals, paper, etc.

Salient Features

Carbon and graphite materials exhibit the following characteristic properties. Due to these properties, carbon and graphite bearings are used in many applications such as high and low temperature technology.

High wear resistance
Good thermal conductivity
Self lubricating
low coefficient of friction
Resistance to corrosion
Excellent dimensional stability
Low thermal expansion
High fatigue resistance
Dry running properties

Company Details

In 1974 a visionary named Usmangani R Shaikh, with science academic background identified the unfulfilled needs of then flourishing textile industries of Ahmedabad for carbon products used for electircal and mechanical applications.
Instantaneously making the most of his technical flair, management skills and risc taking attitude and available team, he embarked on a project to manufacture carbon components like carbon brushes, seal rings and all the carbon products required for various textile machineries of then period. The project named GUJARAT CARBON PRODUCTS started in a small room and with a single work station but with a broad vision, well defined mission, set goals and accurate planning and controlling.
This was earliest impetus by someone in this industry toward which very few people were familiar. Raw material procurement was the biggest problem and equally problematic was the availability of tools and machinery to be used for this unfamiliar material. Striving through these known and numerous unknown problems he succeeded in satisfying the customer need and could establish himself as a pioneer in manufacturing and supplying industrial carbon products in entire Gujarat state.
In 1995 second generation equipped with fresh talent and modern skills and inheriting the experience and know-how of parent, commenced additional project with a new company to provide a thrust which still continues.
Progression was now at the forefront and still continues. By day and night, months and years the affair which started in a small room, have snowballed today into an organisation named GRAPHICARB PRODUCTS- AN ISO 9001-2008 certified company which is the only and the biggest company in Gujarat-INDIA to make carbon products for mechanical and electrical application for all the industries and having stretched value chain from raw material to finished product stage.
Today Graphicarb Products boasts of manufacturing all the products made out of carbon-graphite using minutely selected raw material, state of art machineries, well defined standard operating procedures, best possible factory layout, adequate land space, precision and accurate measuring instruments and stringent quality policy.
Company today looks ahead for a bright future and is commited in serving the needs of its customers satisfactorily. Every day with continual improvement policy, organisation is making every effort towards betterment and success through one and only one policy “Growth through customer satisfaction”