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Flexible Shaft Couplings

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A flexible shaft coupling is needed to connect shafts that are slightly misaligned. In parallel misalignment, two shafts are virtually parallel but slightly offset. In angular misalignment, the shafts intersect at angles to each other. Axial misalignment is a combination of both parallel and angular misalignment. Read More…

Flexible Shaft Couplings A flexible shaft coupling is a device that connects two shafts that can transmit torque even if misaligned. In ideal circumstances, shafts are connected by a coupling to form a straight line. However, two shafts can become out of line as the result of poor installation, thermal growth or shrinkage, foundation movement or component wear.
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Leading Manufacturers

Bloomingdale, IL  |  630-980-1133

Our shaft couplings are the best around! Not only do we provide you with exceptional levels of customer service but we also provide you with manufacturing and a repair service that you can count on. We are also capable of providing you with special designs. That’s right! Our design team will work closely with you in order to ensure that you are getting the product that will fit your specific requirements perfectly! Call or email us today for more information!

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DieQua Corporation $$$

Belmont, NC  |  704-394-0322

Manufacturing shaft couplings for more than 80 years, Ramsey Products Corporations is a leading supplier for industries. Products we offer include, flexible couplings, flexible shaft couplings, drive shafts, & gear couplings. All our products are backed by our commitment to exceptional customer service & support. We want to be your most outstanding supplier & welcome the opportunity to serve you.

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Ramsey Products Corporation $$$

Erie, PA  |  814-480-5000

Ameridrives Couplings is an international manufacturer of mechanical power transmission products, pioneering many improvements over the years. Complete line of coupling products includes Amerigear gear couplings & spindles, Ameriflex diaphragm couplings, Ameridisc high performance disc couplings & universal joints. We are your single source solution for Driveline Connections.

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Ameridrives Couplings $$$

Mahwah, NJ  |  800-465-6297

Mayr manufactures several variations of backlash-free shaft couplings and other power transmission products. Roba-D is our all-steel flexible coupling. Smartflex is for servo and stepper motors. Roba-DS and Roba-DX are torsionally rigid shaft couplings. Roba-ES provides vibrational damping.

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Mayr Corporation $$$

Arden Hills, MN  |  800-444-2474

Colder Products Company specializes in quick couplings & fittings. Quick connect and disconnect couplings include plastic couplings, medical & food-grade couplings, steam-thru couplings, metal couplings, drum connectors, IdentiQuik™ couplings and more. Complete coupling solutions. To learn more about how we may be able to benefit you; get in touch with our customer service representatives today!

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Colder Products Company $$$
placeholder image DieQua Corporation Ramsey Products Corporation Ameridrives Couplings Mayr Corporation Colder Products Company

The degree of misalignment a coupling can tolerate depends on its material and its application, but in general, up to 5° of misalignment can be tolerated. The most common materials for flexible shaft couplings in automobiles are stainless steel, which protects against corrosion and increases torque capacity and strength, and aluminum, which is a lighter and less expensive option. Certain types of flexible shaft couplings contain a central disk comprised of plastic or rubber that transmits torque. Flexible shaft couplings are cylindrical in shape, and vary depending on the different types and their functions.

Flange Mount Bellows Coupling Flexible Shaft Couplings - DieQua Corporation

Flexible shaft couplings are used to connect driveshafts in automobiles; they isolate driveline vibration, propeller pulse, and gear chatter in motorized boats. Other industrial applications include use in printing machines, paper making machines, roll forming machines, hydraulic pumps, and wind turbines.

There are many different kinds of flexible shaft couplings. The Oldham coupling consists of three components: two hubs and a central plastic disk. It accommodates slight parallel misalignment, while providing almost zero backlash. Backlash is the amount of lost motion due to clearance or slackness when movement is reversed and contact is re-established. The bellows coupling has two hubs and a thin walled metallic bellows and can accommodate all three types of misalignment.

Single beam couplings are usually made of a single piece of aluminum and have a system of spiral cuts that allow it to bend in order to accommodate angular misalignment. Multiple beam couplings consist of two to three overlapping beams that address problems of torsional rigidity. Jaw, or spider, couplings consist of two metallic hubs, each with a set of interlocking teeth, and a flexible rubber or plastic piece (the spider), in the shape of a star which fits between them.

Jaw couplings have zero backlash and function well at high speeds but do not tolerate a great deal of misalignment. A single disc coupling is composed of two hubs that bend to accommodate angular misalignment. The double disc coupling has two hubs that are connected by an additional center spacer that allows them to bend in opposite directions to manage offset shafts.

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