Overview: EXTENSION SPRINGS are attached at both ends to other components.
When these components move apart, the spring tries to bring them together again. Extension springs absorb and store energy as
well as create a resistance to a pulling force. It is initial tension that determines how tightly together an extension spring
is coiled. This initial tension can be manipulated to achieve the load requirements of a particular application. Extension Springs
are wound to oppose extension. They are often tightly wound in the no-load position and have hooks, eyes, or other interface geometry
at the ends to attach to the components they connect. They are frequently used to provide return force to components that extend in the actuated position.
Applications: Applications for extension springs include automotive interiors and exteriors, garage door assemblies, vise-grip pliers, carburetors, trampolines, washing devices, farm machinery, toys as well as thousands of other uses. Extension springs come in a wide array of sizes, from small medical devices to off-road machinery brake springs.
Configurations: Lee Spring's Stock Extension Springs are supplied with full diameter loops (either machine or crossover center) at a random position. Loop openings are approximately one wire diameter and the direction of wind is optional. Lee Stock Extension Springs are available in both Inch and Metric designs. If exact direction of helix is required, Custom Extension Springs can be made to specification. To fit the function of extension springs, a multitude of hook or loop configurations may be specified. Close winding of the body provides initial tension in the spring to help manipulate the load and rate.