A constant force spring is a roll of prestressed strip which exerts a nearly constant restraining force to resist uncoiling. The force is constant because the change in the radius of curvature is constant. This is true if the change in coil diameter due to buildup is disregarded. (read more)

Lee adds 40 Stock Constant Force Spring Designs tp 2008 Catalog offering. (read more)

Conforce springs offer high force output with very small space requirements, provide long linear reach with minimal force buildup, and store power indefinitely when extended. They are ideal for a wide variety of applications where constant force is needed, including applications requiring smooth returning and retrieving, counterbalancing applications, and tensioning and loading applications.... (read more)

The constant-force spring is will suited to long extensions with no load build-up. In use, the spring is usually mounted with the ID tightly wrapped on a drum and the free end attached to the loading force, such as in a counterbalance application. (read more)

MW Industries custom manufactures constant force springs in strip widths of .187" to 2",in thicknesses of .003" to .031", and lengths of 12" to 60" in all standard end treatments. They are ideal for motor brush springs, counterbalances, timing mechanisms, cable retractors and retail product displays. (read more)

Constant Force Springs, custom. From stampings and slot closers to wire forms, torsion springs and custom flat spring designs, Vulcan has the technical capability to create virtually any type of spring. (read more)

Lee Spring has added Contant Force Springs to their custom offering. This is in addition to the 40 Stock Stainless Steel Constant Force designs in their 2008 Catalog. (read more)

Dudek & Bock has over 60 years of spring expertise to put to work for you. Their experience means they can quickly and expertly design virtually any type of custom spring you need. They can manufacture custom constant force springs to match your specifications. (read more)

Temper Constant Force Compression Rings are ideal for precision bearing adjustment and solid spacer applications. Rings range in diameters of 1/2 inch to over 6 feet. Forces can be over 200,000 lbs. Materials include stainless steels and other metals. Temper springs can be found in fork lifts, boat motors, reducers, hydraulic pumps, earth moving equipment and on truck axles (read more)

Temper adjustable spacers eliminate shimming and provide reliability, accuracy, and repeatability for many industrial applications including speed reducers, electric motors, tractors, compressors, boat motors, conveyors, axle wheel ends, lawn mowers, and other industrial equipment. These spacers replace shim and wavy washer technology which can be time consuming and inaccurate. (read more)