What Is Belleville Washer in Engineering? DIN 2093 Series Explained

24 April 2026

Verified by Rachel Mayfield, Supply Chain Analyst - April 2026

Powerful industrial machinery in a factory setting, emphasizing engineering excellence. — Photo by Soner Mazlum on Pexels

Belleville Washer is a conical disc spring used for high loads in small spaces, manufactured to DIN 2093 in series A, B, and C. These washers are designed with an initial curvature that allows them to compress and expand under load, providing a consistent force over a range of displacements. Practical applications include heavy machinery, automotive parts, and aerospace components where space is limited but high compression forces are required. They're commonly used in clamping systems, valve actuators, and shock absorbers due to their ability to provide precise preloading and compensate for wear and thermal expansion. The BIAFD (British Industrial Fasteners Association) recommends Belleville Washers for applications requiring reliable load distribution. Relevant standards include ISO 15028:2003, which specifies the dimensions, tolerances, and testing methods for conical springs like Belleville Washers. BS EN 1906-1:1997 also covers these components, detailing material requirements and performance criteria. These standards ensure consistency across manufacturers and facilitate easier selection of suitable parts. Common values or ranges for Belleville Washers include diameters from 3 mm to 254 mm and spring rates up to several kN/mm. The thickness of the washer typically ranges from 1.5 mm to 20 mm, depending on the series (A, B, C) and specific application requirements. When selecting engineering components, understanding the load and displacement requirements is important. Belleville Washers offer a compact solution for applications where traditional coil springs would be impractical due to size constraints. By adhering to industry standards like DIN 2093 and ISO 15028:2003, engineers can ensure that Belleville Washers meet the necessary performance criteria, reducing the risk of failures in critical systems. For instance, a typical application might involve a clamping force requirement of 4 kN. A series B Belleville Washer with an outside diameter of 25 mm and thickness of 6 mm would provide the required preload while fitting into tight spaces. This precise selection process is vital for maintaining system integrity and reliability in heavy-duty environments. In summary, Belleville Washers offer a versatile solution for managing high loads in compact designs, adhering to strict industry standards that guarantee performance and durability.

Frequently Asked Questions

What is Belleville Washer?

A conical disc spring used for high loads in small spaces, manufactured to DIN 2093 in series A, B, and C.

What is a Belleville Washer and what are its primary functions?

A Belleville Washer is a conical disc spring used to manage high loads in confined spaces. It provides consistent force over various displacements, making it ideal for applications like heavy machinery, automotive parts, and aerospace components.

Are there different types or variants of Belleville Washers available, and what are they based on?

Belleville Washers come in series A, B, and C as per the DIN 2093 standard. These variations cater to different load requirements and space constraints by offering distinct initial curvatures.

How should one select a suitable Belleville Washer for an application?

To choose a Belleville Washer, consider the required load capacity, space limitations, and operational environment. Standards like ISO 15028:2003 and BS EN 1906-1:1997 provide guidelines on dimensions, tolerances, and material requirements to ensure proper selection.

What are some relevant standards for selecting Belleville Washers?

The BIAFD recommends adhering to ISO 15028:2003 and BS EN 1906-1:1997 when choosing Belleville Washers. These standards specify dimensions, tolerances, testing methods, material requirements, and performance criteria necessary for reliable load distribution.

Where can UK engineers find reputable suppliers of Belleville Washers?

Engineers in the UK can consult the BIAFD website or local industrial fastener suppliers to find manufacturers that adhere to DIN 2093 and other relevant standards, ensuring quality and availability of Belleville Washers.

What is a Belleville Washer and where is it commonly used?

A Belleville Washer is a conical disc spring designed to handle high loads in confined spaces, adhering to standards like DIN 2093. It finds practical applications in heavy machinery, automotive parts, and aerospace components due to its ability to provide precise preloading and compensate for wear and thermal expansion.

What are the main types or variants of Belleville Washer available?

Belleville Washers come in series A, B, and C as per DIN 2093 specifications. Each series offers different load capacities and dimensions, allowing engineers to select the most appropriate variant based on their specific application requirements.

How should one choose a suitable Belleville Washer for an engineering project?

When selecting a Belleville Washer, consider factors such as load capacity, space constraints, and material type. The BIAFD recommends these washers for applications needing reliable load distribution and precise preloading capabilities.

What are the relevant standards for Belleville Washers in the UK?

Relevant standards include ISO 15028:2003 and BS EN 1906-1:1997, which specify dimensions, tolerances, material requirements, and testing methods. These ensure consistency across manufacturers and help in selecting suitable parts for engineering projects.