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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 $$$

Grand Rapids, MI  |  616-453-5463

Certified ISO 9001:2000 company, Apex Spring & Stamping, is a top manufacturer of springs. Coil springs manufactured: torsion, extension or specialty springs. Flat stock is of spring steel, aluminum, stainless, brass, copper or rolled steel. Since 1977, our goal has been customer satisfaction. We will provide products that meet or exceed our customers expectations that are delivered on time.

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Apex Spring & Stamping Corporation $$$

Spring Grove, IL  |  815-675-1350

When it comes to springs, you'll find exactly what you are looking for with us! We have years of experience manufacturing high quality products from a variety of materials, in a variety of sizes and shapes. We strive to offer exactly what spring types and configurations our customers need with accuracy in quality and cost-effectiveness. Find out more by giving us a call today!

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All-Rite Spring Company $$$

Santa Clara, CA  |  408-986-1020

Since 1979, our springs & metal parts have been manufactured for the aerospace, electronic instruments, & medical industries. The torsion springs, compression springs, extension springs, flat springs, & leaf springs that American Precision Spring Corporation offers are used by customers worldwide.

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American Precision Spring Corporation $$$

McKees Rocks, PA  |  800-245-6200

Quickdraw Conveyor Systems are specially designed for use in automation processes. Our flexible design is ideal for conveyance in clean-room environments, automotive component assembly, medical device and instrument assembly, microelectronics production and semiconductor applications.

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General Wire Spring Company $$$
placeholder image R & L Spring Company Apex Spring & Stamping Corporation All-Rite Spring Company American Precision Spring Corporation General Wire Spring Company

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