Graphite Bearings

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

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.

Leading Manufacturers

Denver, PA  |  717-336-7507

At Weaver Industries, we offer quality graphite machining for parts and products. We provide control at all stages of the manufacturing process, from acceptance of an order, through project products. We have built our name on integrity, quality, technology and workmanship. Our inventory and production levels make us the nation's largest independent facility. Please contact us today for a quote!

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Weaver Industries, Inc. $$$

Harvard, IL  |  800-891-6469

We understand the challenges that are associated with graphite machining and we strive to work closely with your team to ensure quality satisfaction. From milling, grinding, CAD or sanding, we can provide it all. We have a wide assortment of materials so you can find exactly what you are looking for. Our company also offers products designed from our innovated cutting solutions. These techniques use 30 to 40% less energy compared to traditional methods which saves you money!

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Industrial Graphite Sales, LLC $$$

Bethel Park, PA  |  412-831-9400

Ameri-Source is your source for machined graphite products. Our team of dedicated & qualified engineers & sales professionals will do their best to ensure you receive quality. We offer graphite products & capabilities such as carbon graphite, graphite machining, graphite rods, graphite design & graphite tubes. Our company offers the most competitive prices in the industry. Contact us for a quote!

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Ameri-Source Specialty Products $$$

Maywood, IL  |  708-410-0700

A manufacturer of graphite products, Becker Brothers Graphite Corporation, offers complete graphite machining facilities as well as a wide selection of parts. At our company there is no compromise for quality performance. A long history of application satisfaction proves that we can provide the technical assistance and manufacturing expertise to assure excellent in-service performance. Visit our website to find out more!

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Becker Brothers Graphite Corporation $$$

Anmoore, WV  |  304-624-1200

Built on over 100 years of experience, GrafTech’s Advanced Graphite Materials division manufactures some of the highest quality, most innovative machined graphite products using the best materials. Very few shops can machine graphite blocks as large as we do. We can handle ANY CAD system used today.

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Advanced Graphite Materials $$$
placeholder image Weaver Industries, Inc. Industrial Graphite Sales, LLC Ameri-Source Specialty Products Becker Brothers Graphite Corporation Advanced Graphite Materials

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