What is presetting?

Presetting takes place during the manufacturing process of a Belleville disc spring when it is momentarily flattened. The process reduces the original unloaded height of the spring, as a result of the residual tensile stresses.

Preset Belleville disc springs, typically, are used to maintain load or tension in bolted assemblies.

Presetting is not always necessary and must be specified at the time the order is placed. Presetting is one aspect of creating custom Bellevilles for your application. Our engineers can advise you on whether presetting is required for your application and help you determine the amount of presetting.