About Extension Springs

Extension springs are designed to absorb and store energy by offering resistance to a pulling force. As an extension spring is slowly stretched, tension force is resisted, as the spring attempts to return to its original coiled position. The greater the extension of the spring, the higher degree of resistance it will have. Extension springs are used in the design of a wide range of products, including garage doors, screen doors, scales, toys, trampolines, medical devices, tools and more.

Typically closed wound, extension springs are most often cylindrical in shape, but end styles can vary greatly. They can be engineered to accommodate different loads, applications, or specific conditions by varying the size of the coil, the size of the wire or even by the length of the extension springs. Like most spring types, extension springs are developed from a wide range of materials, depending on the application requirements, which might include factors such as stress, temperature, and corrosive environments.

As a spring manufacturers with comprehensive fabrication capabilities, W.B. Jones can custom manufacture extension springs to precise specifications. W.B. Jones design specialists assist buyers in ordering custom extension springs, making sure that the springs meet all of application needs and work within the established budget.  All W.B. Jones springs are manufactured in the U.S., and most custom orders ship within 5 to 10 business days. We also carry a wide range of stock extension springs and assortments that ship within 1-3 business days.

W.B. Jones has over 100 years’ experience providing quality extension springs, both stock and custom to meet your needs. Our team will work from new or existing custom designs to deliver the extension springs you need.