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Graphite Bearings

A reliable source for Machined Graphite information and leading Machined Graphite Companies & Suppliers.

Bearings are simple parts that are used to reduce friction when placed between two moving parts and are often applied with traditional lubricants to decrease friction. However, there are certain situations when lubricants cannot be used and in these instances, bearings made of graphite are used because they are self-lubricating. Read More…

Graphite Bearings Graphite bearings are used in bearing system applications where external lubricants cannot be used due to sanitary reasons, or to prevent the risk of contamination.
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Leading Manufacturers

Denver, PA  |  717-336-7507

At Weaver Industries we specialize in manufacturing machined graphite parts and products. Our goal is to ensure that our customers get the right tools for their applications. We are leaders in the industry for our graphite machining processes which include recycling and reclaiming machined electrodes. Custom molded urethane and high quality carbon graphite are only a few of our other capabilities.

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Weaver Industries, Inc. $$$

St. Marys, PA  |  814-781-1573

Morgan Advanced Materials & Technologies provides machined graphite, carbon graphite and graphite composite in a variety of forms, including bearings, seal rings, rotary vane compressors and meters, high-temperature parts, glass-handling parts and continuous casting products.

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Morgan Advanced Materials & Technologies, Inc. $$$

Schaumburg, IL  |  800-703-0718

3D Graphite & Machining is known for our premium quality machined graphite. For over 40 years we have been known worldwide for our high-quality reputation. We offer a variety of products, including custom-cut, billet, and pre-machined and finished machined parts. Customer satisfaction is our primary concern. Industries we serve include power generation, medical, die/mold, and aviation/aerospace.

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3D Graphite & Machining $$$

Bellmawr, NJ  |  800-210-5000

At Mercer Gasket & Shim we are committed to continually improving our efficiency and effectiveness in order to better serve our customers. We pride ourselves on speed & flexibility, offering 24-hour service & 100% on-time delivery. Our systems are created to be tailored to the needs of each customer.

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Mercer Gasket & Shim $$$

Menomonee Falls, WI  |  888-560-7744

Schunk Carbon Technology manufactures a wide range of carbon graphite, graphite, metal graphite, resin bonded graphite products, and more. We produce material for electrotechnical, mechanical, and thermal applications. Our business was founded in 1978.

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Schunk Carbon Technology, LLC $$$

Asbury, NJ  |  908-537-2155

Asbury Carbons is one of the world's largest processors and merchants of graphite in all forms. We offer graphite machining and graphite products such as graphite blocks, plates and rounds for markets, including fuel cells, sealing materials, powdered metallurgy, friction products and more. Visit our website or call our friendly customer service team, we are ready to help.

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Asbury Carbons $$$
placeholder image Weaver Industries, Inc. Morgan Advanced Materials & Technologies, Inc. 3D Graphite & Machining Mercer Gasket & Shim Schunk Carbon Technology, LLC Asbury Carbons

Graphite is naturally a greasy mineral, and does not require any additional fluids to reduce friction when used as a bearing. It also has an extreme temperature resistance, more than any metal, and is able to maintain its structure and shape even in temperatures up to 5000°F. Therefore, machined graphite is commonly used in high heat environments, where oil, grease and metals tend to oxidize, often in load capacity systems.

Using graphite bearings dramatically opens up the temperature and chemical range of mechanical operations; some even fare well in cryogenic conditions as graphite is not susceptible to damage as a result of thermal shock. Mostly, they are used in the food, beverage, medical and pharmaceutical industries in machinery where contamination is a concern. They also exhibit high temperature stability and chemical resistance, and can therefore operate in underwater, outer space, underground, in liquid, gas and vacuum environments.

Graphite bearings are able to operate in extreme heat at temperatures significantly higher than any lubricants, which begin to carbonize at temperatures above 200º C. The bearings are fabricated via the extrusion process, which involves heating a mixture of graphite powder and additives until soft and forcing it through a hollow profile.

They are generally shaped like standard bushings—round profiles, thin and hollow. Graphite bearings are black or dark grey in color, and are usually smooth and uniform in thickness. Since graphite tends to be a porous material, many bearings are put through post processing secondary operations, where they are impregnated with wax, high purity linseed oil or a resin. This smoothes out the surface of the bearing and prevents any problems that may occur if water or gas seeps into the graphite’s exterior surface.

The wax, resin or oil reduces the porosity of graphite, making it less susceptible to interior wear and tear. Graphite bearings are long lasting, although as with all bearings or load carrying components, will need to be replaced from time to time. Due to these many advantages, including being dimensionally stable, graphite products are used in a large number of corrosive and abrasive applications.

Graphite Bearings Informational Video

 
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