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Your Ultimate Guide to Belleville Washers

Dec. 25, 2023

What is a Belleville Washer?


Belleville washers, also referred to as conical spring washers, are cupped spring washers that flatten out as pressure is applied to them. Unlike a flat washer, a Belleville washer absorbs vibration and shocks, making them very important in several applications and industries.


What are the Applications of Belleville Washers?


Belleville washers serve the purpose of preventing fasteners from loosening due to vibration, absorbing shock, and maintaining joint integrity. These conical washers find widespread use across various industries including automotive, energy, distribution, chemical, pump and valve manufacturing, industrial automation, utility transmission, and more. Specifically designed for high-temperature environments and highly corrosive settings, American Belleville washers excel in ensuring top-notch quality. They are engineered to counteract relaxation effects, address thermal expansion concerns, and prevent bolt yield.


Belleville Washers

Is Stacking Belleville Washers Recommended?


Using a single belleville washer results in a defined load and deflection, whereas stacking two or more conical spring washers increases both load and deflection. It's important to note that while spring washers offer versatility and can be stacked in various configurations, the bottom-most conical washer in the stack must always have the widest footprint among all the washers. Common techniques for stacking disc springs include:


Parallel Stack:


In a parallel stack, washers are aligned in the same direction. This stacking method doesn't amplify deflection, but each additional washer enhances the load capacity of the stack.


Series Stack:


In a series stack, conical washers are positioned from top to bottom, creating a gap in the middle. While this arrangement doesn't boost the load capacity of the fastener assembly, it significantly amplifies the stack's deflection by introducing a spring-like effect to the washers.


Parallel/Series Stack:


A mixed parallel/series stack integrates both types of stacks within a single fastener assembly. This stacking approach increases both the deflection and load capacity of the assembly, adaptable to meet various application requirements.


How to Install Belleville Washers:

To properly install belleville washers, we recommend following these steps:


1. Determine the required load capacity and deflection for your project.

2. Choose suitable plating or finishing options to ensure resistance against environmental elements that could affect performance and longevity.

3. Select the washer stack configuration that will provide optimal results.

4. Slide the washers onto a bolt, arranging them in the chosen stack, ensuring the cupped spring washers face downward.

5. Insert the bolt through the installation material, ensuring that the washer stack presses against the material. Remember, the base washer should be the widest in the stack.

6. Tighten the bolt against the opposite side of the installation material.

7. If reusing Belleville washers in a different application, thoroughly inspect them for any damage before reuse.




In conclusion, the installation process of belleville washers demands precision and adherence to guidelines to ensure their effective functioning. Additionally, their diverse applications across industries underscore their significance in various critical systems.


For more information about belleville washer installation and sourcing from a reliable supplier, please contact us.

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