Belleville Spring Washers
Belleville spring washer, coned disc spring, and conical spring washer are all names for a type of spring that is a conically shaped disc that deflects (flattens) at a given rate. Conical spring washers have a high spring rate, resolve thermal expansion and can produce extremely high loads in a small area. They also absorb shock, provide dampening, and support high tension in bolted applications.
Solon is an American manufacturer of Belleville spring washers designed to create tight connections better than conventional springs and maintain bolt preload in a broad range of industrial applications including live loading, pump and valve manufacturing, industrial automation, and more. Our high-performance American Belleville spring washers, disc springs, and flange washers come in several material options and provide the versatility and durability you need for demanding applications.
View the product links to learn more about our Belleville washer options or use our bolt load calculator and torque calculator web tools for product selection assistance. Please contact us with any questions or to request printed literature.
Typical Belleville Spring DiagramBelleville springs are characterized by four geometrical variables including outside diameter (OD), inside diameter (ID), thickness (T) and overall height (H) as shown in the diagram below. Carefully consider each measurement before selecting a coned disc spring:
- Inside diameter represents the interior hole size of the disc spring and should match your bolt size.
- Outside diameter measurement is maximum outside diameter of the washer
- Thickness indicates the material thickness and disc spring height when it is flattened
- Height measurements represent coned disc spring height in an unloaded state
Belleville Spring Washers Provide High Load in Limited Space ApplicationsConed disc springs perform many of the same functions as helical springs but provide better performance in applications with limited space. They are also highly configurable to meet a range of load requirements. A single Belleville spring washer provides specific load and deflection while stacking two or more conical spring washers creates an increase in load and/or deflection.
Different methods of stacking disc springs include:
- Parallel stacking to double the load with no deflection increase
- Series stacking to double deflection with no load increase
- Parallel-series combination stacking to double load and deflection
Precision Engineered Conical Spring Washers in Imperial and Metric SizesAs an American Belleville spring washer manufacturer for over 70 years, Belleville spring washers have been an integral part of the Solon Manufacturing product family. While other companies provide washers, springs, and locknuts, Solon’s standard for excellence continues to distinguish us from our competitors. Attention to engineering detail along with investments in technology and resources have given us the opportunity to rise to the occasion of meeting our customers’ needs—big and small—consistently.
We offer coned disc springs in a variety of styles, sizes, heights, and thicknesses to meet different tolerance requirements. When selecting a spring, consider your size and load requirements, as well as the operating environment. Material selection is also important and determined by your bolt material, operating temperature, environment, and application.