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Motor Couplings

A reliable source for Motor Couplings information and leading Motor Couplings Companies & Manufacturers.

Although they vary significantly, motor couplings are always composed of an outer casing with an axis and two sides and a carriage shaft, where a carriage moves sideways along an axis of rotation and is surrounded by ball bearings. Read More…

Motor Couplings Motor couplings are flexible devices that provide distance changes along a lateral axis between a motor shaft and a device. Flexible shaft couplings are necessary to connect shafts that are slightly misaligned. 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.
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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 $$$

Mentor, OH  |  800-542-6552

Climax Metal Products Co. specializes in the manufacture of shaft collars and rigid couplings. Our rigid couplings and shaft collars are presented as one- or two-piece types, plus set screw and metric offerings. We can customize our products for you. We are ISO 9001 certified. Contact us for your needs.

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Climax Metal Products Company $$$

South Haven, MI  |  231-879-3372

Niche shaft couplings manufacturer System Components offers a combination of highly specialized automotive expertise, skilled engineering & unbeatable prices. Let our team of engineers & service representatives help you find universal joints, spicer u joints, cardan joints & custom power transmission components made with CNC machining & high-grade steel.

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System Components, Inc. $$$

Tuckahoe, NY  |  914-961-2000

Stoffel Polygon Systems manufactures precision polygon drive connections and other mechanical parts. Whether for prototype or production we will engineer a part to match your needs and specifications. Polygon systems offer the highest torque carrying capacity of any drive connection and ours are made from high quality materials to ensure smooth movement, reduced backlash and many other benefits.

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Stoffel Polygon Systems, Inc. $$$

Mount Prospect, IL  |  888-426-7117

Gam Enterprises is a distributor of Jakob torsion-resistant precision couplings and safety couplings for servo drive applications. We also manufacture shaft couplings, gear couplings and rigid shaft couplings. What sets us apart from our competitors is our flexibility in making sure all of our customers' needs are met. Contact Gam today for more information.

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Gam Enterprises, Inc. $$$
placeholder image DieQua Corporation Climax Metal Products Company System Components, Inc. Stoffel Polygon Systems, Inc. Gam Enterprises, Inc.

Motor couplings exhibit high torsional stiffness which prevents system resonance. There are five main types of flexible shaft couplings that are used for motor applications: beam, Oldham, jaw, disc and bellows. Components of motor couplings are mostly made out of metal like steel, stainless steel and aluminum. Certain parts, like the spider in jaw couplings, are made of polyurethane or other plastic resin-based materials.

Shaft Couplings Motor Couplings - Lovejoy

Each motor coupling has different degrees of torque, shaft misalignment, stiffness, rotations per minute and space requirements and these factors must be taken into account when choosing a coupling for a motor application. Motor couplings are used in medical systems like scanners, DNA analyzers and x-ray equipment, as well as home appliances like blenders, dishwashers and washing machines.

The five kinds of motor couplings are different in size, shape and characteristics. Beam couplings have zero backlash and are machined with several spiral cuts to absorb impact. Oldham couplings have high parallel misalignment capabilities while jaw couplings are best for shock absorption because of their plastic dampening component called a spider.

It serves to dampen impulse loads and minimize shock to a motor. These couplings are considered fail safe because if the spider malfunctions, the jaws of the two hubs interlock and create direct power transmission so the vehicle can shut down safely. Jaw couplings perform the best for applications that use a stop-and-go type of movement that also require accuracy; they are not optimal for applications in which precise movements are required during movement.

Disc couplings are torsionally rigid and therefore have high misalignment capability. Bellows couplings offer the most rigid torsional stiffness. They offer a near-infinite life span and are virtually maintenance free. Their connection is hidden within the fit-length of the hub, enabling exact transmission of angular motion and torque.

One of the most common methods of construction for motor couplings is electroforming where the part is built by adding layers of metal on a mandrel until the desired thickness is reached. Another method is mechanical forming such as roll-forming or extrusion. Welded couplings are made by welding a series of rings or washers inside and outside.

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