Understanding Extension Springs

Extension springs are commonly used  in automotive assemblies, garage door mechanisms, hand tools,  toys, trampolines, washing machines, farm equipment, and more. They are available in a wide range of sizes, from tiny extension springs for medical devices to larger sizes for industrial machinery. Extension springs are attached to other components on both ends. As the components move apart, the spring provides a force that brings them together again.

By design, extension springs are engineered to absorb and store energy by offering resistance to a pulling force. When the extension spring is slowly stretched the tension force is resisted because the spring is attempting to return to its coiled resting position. The farther the spring is extended, the greater the degree of resistance it will have.

Extension springs are usually cylindrical in shape and closed wound. End styles vary based on the application for which they are being used. By varying the diameter of the coil, wire thickness, and length of the extension spring, they can be designed to accommodate a variety of loads and application conditions. As with most spring types, extension springs can be fabricated from a number of different materials to suit individual application needs. Temperature, stress, and corrosive environments are examples of factors that will influence material selection.

W.B. Jones is a specialized and experienced manufacturer of high quality springs. Our expertise and capabilities include the fabrication of custom extension springs made to precise specifications. We assist our customers in ordering custom extension springs that meet all application requirements and work within the customer’s  established budget.  All W.B. Jones springs are manufactured in the U.S., and most custom orders ship within 3 to 10 days.

We’re proud to offer over a century of experience providing both stock and custom quality extension springs. Our team will work from new or existing custom designs to deliver the extension springs you need.