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 Moreā€¦

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

Leading Manufacturers

Lake Geneva, WI  |  262-249-7854

Established in 1972, our trusted company is a leading manufacturer, producing high quality coil springs, among others. Handcrafted prototypes are handled with care and precision in our Tool & Die Shop. Additionally, we provide assembly services and can produce special forms not fit for machine operations. Give us a call today to get a start on your next project, or visit our website.

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R & L Spring Company $$$

Woodstock, IL  |  888-795-2645

As a manufacturer of mechanical springs, Royal Coil can punch press, die tool & four-slide to produce an array of springs such as compression springs with diameters from .008 - .250, extension springs from .008 - .209 diameters, & torsion and double torsion springs ranging from .008 - .209 diameters. ISO 9001:2000 certified, we manufacture quality custom industrial springs such as coil springs.

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Royal Coil, Inc. $$$

Rockford, IL  |  815-968-3000

Quality is our number one priority. We have over 60 years of experience! You can trust our company to only offer the most durable, quality coil springs and other spring products in the industry. We work with many industries, including aerospace, military, commercial, and automotive. You will find that we will always have the perfect solution for you. Contact us for details!

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Rockford Spring Company $$$

Chicago, IL  |  800-969-7884

Sterling Spring has offered high-quality springs since 1953. Our product line includes compression springs, coil springs, torsion springs, extension springs and industrial springs. We offer just-in-time delivery and cost-effective prices, regardless of your ordering volume.

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Sterling Spring Corp. $$$

Muskego, WI  |  262-682-4711

It is our belief that all customers deserve the very best- whether large or small. We take the time to work with each individual customer to create the perfect springs solution for their needs. We will not turn away a customer from any industry, and we will use our expert engineering experience to help create the perfect spring product for you. Find out more by contacting us online today!

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WCS Industries $$$
placeholder image R & L Spring Company Royal Coil, Inc. Rockford Spring Company Sterling Spring Corp. WCS Industries

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