In response to customer requests to expand its Stock Compression Spring offering to include Constant Force Springs, Lee Spring has added four series to their 2008 Print and Online Catalog. Lee now offers Constant Force Springs in four Life Cycle ranges: 2500, 4000, 13000 and 25000. Each spring is a roll of high yield Type 301 Stainless Steel strip exerting a nearly constant restraining force to resist uncoiling. When the strip is extended, the inherent stress resists the loading force at a nearly constant rate. Constant Force Springs are usually mounted by first tightly wrapping the spring on a drum, then attaching the free end to the loading force such as in a counterbalance application. This relationship can also be reversed.

For further information on Lee's Constant Force Springs or to order a catalog, visit their website at www.leespring.com, email marketing@leespring.com or call 888 SPRINGS.