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Clutch Discs

A reliable source for Friction Materials information and leading Friction Materials Companies & Manufacturers.

Clutch systems are used in a variety of industries such as agriculture, transit, automotive, construction and more. Read More…

Clutch Discs The clutch disc is a rounded plate used to connect the engine of a vehicle to the transmissions input shaft allowing the temporary separation needed to shift gears.
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Leading Manufacturers

Cleveland, OH  |  800-626-6540

You only need to know one name for your friction material needs: Cook Bonding & Manufacturing. We have been working hard for over 3 decades and specialize in the manufacture of high quality friction materials, gear tooth facings, press blocks, and more.

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Cook Bonding & Manufacturing Co., Inc. $$$

Mount Kisco, NY  |  914-244-3600

ProTec Friction Group is a producer of friction components and forms. By combining our manufacturing expertise with our supply chain knowledge, we are able to bring friction solutions to our customers.

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ProTec Friction Group $$$

Waukesha, WI  |  262-547-5450

At Fisher Barton’s Accurate Specialties, our innovative, integrated manufacturing supports our expertise in chill casting, centrifugal casting, spuncast gear blanks, continuous casting, and more. Fisher Barton delivers complete, Accurate Specialties branded, fully machined, ready-to-hob bronze gear blanks made to exact customer specifications. With us, you can guarantee quick turnaround times and delivery in as little as one week. We are ISO 9001:2008 certified.

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Accurate Specialties $$$

Philadelphia, PA  |  800-925-8824

In business since 1732, The Rowland Company is a specialty distributor/fabricator of industrial power transmission components and friction materials. The company specializes in problem solutions tailored to our customer's specific needs from clutch sets and brake assemblies to couplings, gear boxes, variable speed drives and other related items, all designed to withstand rugged industrial use.

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The Rowland Company $$$

Canton, OH  |  800-745-5808

Cleveland Oak's friction material products division designs & manufactures friction products such as brake shoes, clutch facings, bands, disc brake pad products plus clutch pads. We keep metric & standard molded, sheet & woven friction materials in stock & perform friction materials bonding and riveting. In business since 1916, our high quality friction materials are economically priced as well.

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Cleveland Oak $$$
placeholder image Cook Bonding & Manufacturing Co., Inc. ProTec Friction Group Accurate Specialties The Rowland Company Cleveland Oak

Hydraulic, mechanical, pneumatic and electric clutches all utilize the clutch disc. Also known as a clutch plate, this device plays an integral role in shifting gears of a vehicle or piece of heavy machinery. Similar to brake blocks and pads, clutch discs incur a great deal of friction. For this reason, a stainless steel plate is commonly used for added durability. In order to maximize effectiveness, the plate is often coated with friction materials. While the use of asbestos is limited due to related health hazards, carbon-composites, semi-metallic and non-metallic substances are all used in the production of clutch discs.

Clutch Disc Clutch Discs - ProTec Friction Group

Ceramics, mineral fibers, cellulose, aramid fibers, chopped glass, steel and copper fibers are all employed in varying degrees to create composites suited to specific clutch systems. Heavy duty applications such as trucks and performance cars, for example, use ceramic clutch discs because of their increased coefficient of friction, heat resistance, durability and extreme strength. While general composites are known, manufacturers are often secretive of their specific friction material compositions in order to beat out competitors.

n general, the compression of a clutch pedal causes several springs connected to a pressure plate to compress as well. This compression pulls the plate, and connected clutch disc, away from the flywheel which is bolted to the engines crankshaft. The disconnection stops the rotation of the clutch disc which intern disconnects the central hub of the disc from the input shaft. The driver may then shift gears. After shifting, the pedal is released and the clutch disc reengages the flywheel. The clutch system works to ensure consistent clutch engagement and disengagement. This process, however, creates a great deal of friction on the clutch disc.

Friction can wear the coating of the disc resulting in its slipping against the flywheel causing the transmission to lose step. This loss of grip indicates that a replacement clutch disc is needed. Important considerations when selecting the proper disc include torque rating, power, rotational speed and maximum pressure allowances. Additionally, it is important to consider the type of clutch system in place. Hydraulic clutches for example, would be classified as a wet clutch while a mechanical clutch is dry. Wet clutches may utilize multiple clutch discs to improve friction despite the presence of fluids.

Clutch Discs Informational Video