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Extension Springs

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Most other coil spring varieties are either compression or torsion springs, which are used to store and transmit compressive and rotational force, respectively. Instead, extension springs resist linear pulling forces. Read More…

Extension Springs Extension springs are coil springs that lengthen under the weight of a load.
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Leading Manufacturers

Lake Geneva, WI  |  262-249-7854

R&L Spring Company manufactures custom spring and wire formed components for industries such as powersports, automotive, medical devices, and general industrial. Products include compression, extension, and torsion springs, as well as rings, wire forms, fourslide components, and long coils. Wire diameters available from .001" to .750" in both shaped wires and flat stocks. Their experienced team is able to meet the most demanding parts specifications. IATF16949 and ISO9001 certified.

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R & L Spring Company $$$

Chicago, IL  |  773-777-2600

At Stanley Spring and Stamping Corporation we have experience in raw materials and metal fabrication. We are a Midwest manufacturer who is part of the American business community. Our coil springs are made from the highest quality material available. Our production ranges from a few prototypes to over fifty million parts. We provide the best quality in the industry.

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Stanley Spring and Stamping Corporation $$$

Bristol, CT  |  860-583-1326

Founded in 1945, Tollman’s expert engineering staff stands ready to work directly with your designers to meet customized spring design and cycle life requirements and achieve maximum performance of your products. In addition to helping you with the pre-production design of new parts, our engineering and design experts can help improve the performance of your existing products. Tollman’s up-front involvement in the design of customer products saves time and money.

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Tollman Spring Company, Inc. $$$

Bristol, CT  |  860-584-0594

Plymouth Spring Company, founded in 1959, has continued to expand and grow through new technologies and attention to details to serve an ever larger customer base. Plymouth Spring completed the acquisition of the assets of the Bristol Spring Manufacturing Company and has integrated much of Bristol Spring’s highly skilled workforce, equipment and manufacturing capabilities of compression springs, torsion springs & extension springs into our existing facility.

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Plymouth Spring Company, Inc. $$$

Chicago, IL  |  800-860-6031

Established in 1964 and now in our third generation of ownership, Gilbert Spring Corporation has remained dedicated to not only providing the utmost quality in our products but also offering excellent customer service and on-time delivery with short lead times. Our Secondary department can produce complex Springs and Wire/Strip Forms not suited for machine operations, and our on-site tooling department gives us the ability to quickly adapt to customer’s needs.

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Gilbert Spring Corporation $$$

Hicksville, NY  |  855-966-2529

At Ajax Wire, in addition to manufacturing a growing list of stock springs, we can produce springs to your specifications, samples or drawings in short or long runs. We also offer several assortments that come with cabinets and display boards. Compression springs, extension springs and torsion springs are examples of our products. Springs have been our only business for more than 85 years, Call us today!

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Ajax Wire Specialty Company, Inc. $$$
placeholder image R & L Spring Company Stanley Spring and Stamping Corporation Tollman Spring Company, Inc. Plymouth Spring Company, Inc. Gilbert Spring Corporation Ajax Wire Specialty Company, Inc.

Extension Spring Coiling Process Extension Springs - All-Rite Spring Company

Extension spring components are used in tape cassette players, balance scales, trampolines, washing machines, garage doors and in many other products and processes. They usually feature hooks, rings, eyelets or other shapes to which other components can be attached. Extension springs always attached two objects to each other and allow for the controlled movement of those objects relative to each other.

In a trampoline, for example, when a force is exerted on the surface to which the extension springs are attached, the elasticity of the spring allows for its extension to a certain point. Because the spring is attached both to a moving part and to a stationary part, the moving part is restricted in its motion. After extending to a certain point, the extension spring retracts, pulling the moving surface back with it. All extension springs, with few minor exceptions, perform according to similar basic principles.

In contrast to compression springs, extension springs are compact when resting and extended when under stress. They are designed so that their spiral wires are contiguous when there is no weight load and stretched apart when loaded. Extension springs are made of various steel materials, including stainless steel, hard drawn steel, steel music wire and spring steel.

Spring steel is a special kind of steel with increased elasticity and return properties. The elastic ability of a spring enables it to return to its original position; however, this capability diminishes with use. Stainless steel is used as a spring composition material when the spring is intended for use in conditions that involve frequent or constant exposure to moisture or corrosive chemicals.

Stainless steel is by nature strong and corrosion resistant, which makes it appropriate for use as a spring composition material in harsh environments. In general, the larger the spring wire, the stronger the spring is. Decreasing the diameter of the coil is another way to increase spring strength. They come in many different sizes are used in a variety of applications.

Extension Springs Informational Video