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)

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)

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)

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)

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)

Belleville or 'spring washers' are cone-shaped spring discs and are used singly or in stacks to achieve a desired load and travel. In general, they function best under conditions requiring very high load in confined space or short travel. Under these constraints, it is often not practical or even possible to use a coil spring. (read more)

The MOTORTEC™ STPe v1.5 program represents Groschopp's latest of speed, torque and power calculators. STPe v1.5 now allows engineers and product designers to calculate operating costs based upon electrical consumption. (read more)