Shaft Coupling Manufacturers banner

Motor Couplings

A reliable source for Shaft Coupling information and leading Shaft Coupling 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.
Request for Quote

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!

Request A Quote

DieQua Corporation $$$

Bartlett, IL  |  888-534-1222

Wittenstein, formerly known as Alpha Gear Drives, is known worldwide for its research, development, production and sales of high-precision planetary gear reducers and motion control systems. For 25 years we have been a speed reducer manufacturer of right angle gear boxes, worm gearboxes, servo worm gear speed reducers, high precision rack and pinion, linear actuators and rotary servo actuators.

Request A Quote

Wittenstein, Inc. $$$

Santa Maria, CA  |  877-353-9873

Helical Products was conceived in 1958 when George Sabadash developed the concept and method of producing the HELI-CAL Flexure as a single piece flexible coupling/coupler. In addition to our standard shaft couplings, we can design and manufacture special or custom couplings to meet your requirements that exceed the capabilities of our standard lines. A consultation with our Helical factory engineers is at "no charge." We urge you to use this service or call the Helical representative near you.

Request A Quote

Helical Products Company, Inc. $$$

Wilmington, MA  |  800-695-5551

Since 1975, Stafford has been your super source for superior shaft couplings and has grown and developed to be much more, providing a wide assortment of components for power transmission, motion control and other applications. Stafford has the industry-leading capabilities for custom manufacturing, so let its experienced professionals put their experience and expertise to work for you.

Request A Quote

Stafford Manufacturing Corp. $$$

Morristown, TN  |  800-251-9012

Renold Jeffrey is an international manufacturer and distributor of engineering products. Our history and experience dates back to 1864 and our tradition of quality continues. All of the items in our large product line are engineered for precision and performance including our roller and conveyor chains, gearboxes, flexible shaft couplings, material handlers and freewheels among many others.

Request A Quote

Renold Jeffrey $$$
placeholder image DieQua Corporation Wittenstein, Inc. Helical Products Company, Inc. Stafford Manufacturing Corp. Renold Jeffrey

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.

Motor Couplings Informational Video