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What is the Difference Between a Disc Spring and a Belleville Spring?

Jun. 28, 2024

Belleville Washers are primarily used in heavy duty applications fastened together with a bolt where the load is considered static. Disc Springs can be statically loaded either continuously or intermittently, or dynamically subjected to continuous load cycling.

 

Understanding Disc Springs

 

Disc springs, also known as disc washers or spring washers, are conically shaped, thin, and circular springs. They are typically made from high-quality spring steel and are designed to provide a high force in a limited space. Disc springs work by utilizing the deflection of the disc under load to generate force, making them ideal for applications requiring high force within a small footprint.

 

Key Features of Disc Springs

 

- Conical Shape: This design allows for a high load capacity relative to their size.

- Variety of Stacking Configurations: Disc springs can be stacked in parallel or series to achieve different force and deflection characteristics.

- Wide Range of Materials: They are available in various materials to suit different environmental conditions and load requirements.

 

Applications of Disc Springs

 

- Automotive Industry: Used in clutches, brake systems, and valve assemblies.

- Aerospace: Employed in landing gear, control systems, and satellite mechanisms.

- Industrial Machinery: Found in presses, punches, and heavy-duty equipment requiring shock absorption and vibration dampening.


 Belleville Spring


Understanding Belleville Springs

 

Belleville springs, named after their inventor Julian Belleville, are also conical disc springs but typically have a shallower cone angle compared to traditional disc springs. They are designed to provide high spring rates in limited deflection space, offering a combination of high load capacity and small deflection.

 

Key Features of Belleville Springs

 

- Shallow Cone Angle: Provides a high spring rate, making them suitable for applications requiring precise and consistent force.

- Stackable Design: Like disc springs, Belleville springs can be stacked to achieve varying force and deflection characteristics.

- Material Versatility: Available in materials ranging from alloys to stainless steel, offering corrosion resistance and durability.

 

Applications of Belleville Springs

 

- Oil and Gas Industry: Used in valves, flanges, and pipe supports to maintain pressure and alignment.

- Power Generation: Employed in turbines, compressors, and hydraulic systems for load balancing and shock absorption.

- Rail and Transportation: Found in couplings, suspension systems, and braking mechanisms.

 

Differences Between Disc Springs and Belleville Springs

 

1. Cone Angle and Spring Rate

 

- Disc Springs: Have a steeper cone angle, providing a higher load capacity per unit size.

- Belleville Springs: Feature a shallower cone angle, offering a higher spring rate for precise force application.

 

2. Deflection Characteristics

 

- Disc Springs: Allow for greater deflection under load, making them suitable for applications requiring substantial movement and flexibility.

- Belleville Springs: Offer limited deflection with a higher spring rate, ideal for applications needing precise force control and stability.

 

3. Load Distribution

 

- Disc Springs: Distribute loads evenly across their entire surface area, minimizing stress concentrations.

- Belleville Springs: Concentrate loads more directly along their axis, making them effective for applications requiring linear force application.

 

Choosing Between Disc Springs and Belleville Springs

 

The choice between disc springs and Belleville springs depends on specific application requirements such as load capacity, deflection limits, and force precision. Understanding these differences ensures selecting the right spring for optimal performance and longevity in your mechanical systems.

 

Conclusion

 

In conclusion, both disc springs and Belleville springs are vital components in engineering applications, offering unique benefits in terms of load capacity, deflection characteristics, and precision force application. By understanding their differences and applications, engineers and designers can make informed decisions to enhance the performance and reliability of their mechanical systems.

 

For expert advice on selecting the right springs for your applications or to discuss custom solutions, contact us. Our team at HEGONG is dedicated to providing high-quality springs and engineering solutions tailored to your needs.

 Belleville Spring


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