Belleville Spring Washers

  • 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 Diagram

Belleville 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

Typical Belleville Spring Diagram

 


Belleville Spring Washers Provide High Load in Limited Space Applications

Coned 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 Sizes

As 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.
 

DIN and Disc Springs

DIN and disc springs are designed for use in demanding applications when a large number of deflection cycles or forces are critical. Examples include bearing assemblies, valve live loading and heavy equipment. DIN and disc springs are available in 17-7 PH Stainless Steel, 301 Stainless Steel, Inconel and finished carbon steel in metric sizes from 2.5mm to 125mm.
 

Flange Washers

Flange washers maintain sufficient bolt tension and resultant gasket stresses in high-temperature and high-pressure applications and do not need to be retorqued once installed. Examples include flange/bonnet gasket live loading, heat exchangers, actuators and cryogenic applications. Choose from several high-performance materials and a range of inside diameters, outside diameters, heights, and thicknesses.  
 

Imperial Washers

Imperial washers produce high loads in a small space and prevent bolt tension loss due to differential thermal expansion. We offer conical disc springs in imperial sizes with an inside diameter from 7/64” to 2 ½” and outside diameters from 1/4” to 5.50”.
 

Metric Washers

Metric washers feature the same design and high-performance material options as imperial coned disc springs but in metric sizes. Our metric conical spring washers are offered in Belleville spring, flange and DIN/disc spring options with metric sizes ranging from 4mm to 125mm depending on the style selected.
 

Request a Quote for Coned Disc Springs

Request a quote for the American Belleville spring washer that meets your requirements or visit our specifications page for technical notes and additional information on sizes, materials, and finishes. If you have questions, contact our engineers for assistance.