Using Belleville Springs to Maintain Bolt Preload

Technical White Paper Download 

Solon Belleville Springs & Washers are conically shaped discs that will deflect, or flatten at a given rate. The spring rate is usually very high, allowing the spring to produce large loads in small spaces.

Solon Belleville Springs & Washers are used in a variety of applications across many different environments. These springs are used to maintain bolt preload by preventing bolt tension loss due to differential thermal expansion, high-temperature bolt yield, packing and gasket relaxation, and vibration.

Solon Belleville Springs: Reduce Bolted Joint Failures

One of the most common applications for a Belleville spring is a bolted joint. The key to having a sound, bolted joint connection is that some minimum preload must be maintained. If the preload falls below this minimum, the joint will fail. In some applications, joint failure may cause a minor nuisance or cosmetic issue. In other applications, failure maybe be catastrophic, resulting in significant property loss, injury, or death. 

Properly used Solon Belleville Springs can reduce the loss of preload by a factor of 5X or more and greatly reduce the opportunity for a failure.

Download the White Paper, Using Belleville Springs to Maintain Bolt Preload

Download our technical white paper, Using Belleville Springs to Maintain Bolt Preload, to learn more about reducing the risk for bolted joint failures.

Additionally, check out the video: Live Loading Using Solon Flange Washers | Joint Diagram for more information. 

                        Typical Belleville Spring Diagram



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