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An extension spring’s ends attach between two mechanisms. The extension springs hooks and loops store and absorb energy. Through hooks or loops, an extension spring provides return force to connected mechanisms.
Tightly wound extension springs typically sit in the no-load position. More stress in the end hooks—as opposed to the spring body—limits the performance of extension springs.
Extension springs use a variety of hook or loop end configurations to fit specific functions. Extension spring ends include threaded inserts, extended twist loops, crossover center loops, hooks, expanded eyes, reduced eyes, rectangular ends and teardrop-shaped ends.
Modify the length of hooks and the spring body distance for customized extension spring fits and functions.
Extension springs use a variety of hook or loop end configurations to fit specific functions. Extension spring ends include threaded inserts, extended twist loops, crossover center loops, hooks, expanded eyes, reduced eyes, rectangular ends and teardrop-shaped ends.
Modify the length of hooks and the spring body distance for customized extension spring fits and functions.
Find extension springs in a variety of everyday items, from garage doors to tools to washing machines to toys. The variety in size makes extension springs versatile as they are used in small medical devices and off-road machinery. Common applications of extension springs include:
Master Spring manufactures made-to-order extension springs for OEMs.
Our custom spring manufacturing capabilities include:
We have the expertise and latest equipment to design and manufacture your next extension spring order.