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Disc Springs are conically-shaped precision components designed to be axially loaded. Disc Springs are often incorrectly referred to as belleville disc springs, belleville springs, belleville washers or simply conical washers. Disc Springs are unique and differ from other types of springs in that the force/deflection curves of Disc Springs are consistent and repeatable, and the minimum fatigue life can be reliably determined (per the standardized calculations of DIN EN (formerly DIN )). Disc Springs can be statically loaded either continuously or intermittently, or dynamically subjected to continuous load cycling. They can be used singly or in multiples stacked parallel, in series or in a combination thereof to achieve the desired force-deflection characteristic.
Disc Springs are preferred over other types of springs (such as coil springs, belleville washers, belleville springs and conical washers) when used in critical applications such as safety valves, clutch & brake mechanisms for elevators, and supports for industrial pipe systems due to their predictability, reliability and unparalleled fatigue life.
The advantages of Disc Springs compared to other types of springs include the following:
SPIROL offers the full range of DIN EN (formerly DIN ) Group 1 and 2 Disc Springs in Series A, B, and C. In addition to the DIN specified sizes, SPIROL stocks its own standard size range in outside diameters from 8mm to 200mm in order to meet the diverse needs of its customers. SPIROL standard Disc Springs meet all material, dimensional tolerance, and quality specifications as laid out in DIN EN (formerly DIN ) but in diameter and thickness combinations that are not included in the DIN standard.
SPIROL also offers a line of austenitic Stainless Steel Disc Springs.
SPIROL supplies single Disc Springs, as well as Pre-stacked Disc Springs in custom configurations, packaged in shrink wrap with a perforated tab for easy of assembly.
Select from our expansive standard offering, or take advantage of our complimentary Application Engineering support and allow us to work with you to help determine the most appropriate Disc Spring or Disc Spring Stack for your specific application and assembly needs!
Belleville springs are unique axially tapered and loaded springs that can serve as sealing aids and be used individually, in series, or in parallel.
1. When deformed under load, a Belleville spring stores potential energy.
2. If slack occurs, the disc spring releases some of this stored energy.
3. The stress distribution in a disc spring decreases uniformly from the inside to the outside, allowing for low stroke and high compensation force.
4. Belleville springs have excellent shock absorption and can support large loads with minimal deformation, making them ideal for applications with limited axial space.
5. They can be combined in various configurations.
- Superposition combination
- Inversion combination
- Compound combination.
Using various combinations of the same disc spring allows for a wide range of spring characteristics. These can include inversions and superpositions, as well as combinations of different thicknesses and quantities of springs.
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6. Disc springs exhibit variable stiffness characteristics. By adjusting the ratio of the height of the truncated cone to the thickness of the disc, different spring characteristic curves can be achieved, including linear, increasing, decreasing, or combinations thereof. Additionally, variable stiffness can be obtained by combining discs of different thicknesses or stacking varying numbers of discs.
7. If some discs in a Belleville spring become damaged, only the affected disc needs to be replaced, making maintenance and repair convenient.
8. The disc spring is annular in shape, allowing for concentric force transmission.
Belleville springs are versatile and can be combined in various ways, making them popular across multiple industries, including metallurgy, engineering, electric power, machine tools, and construction.
They serve as strong buffers and shock absorbers in heavy machinery. Additionally, they are used as pressing devices in applications such as clutches, safety valves, and pressure-reducing valves.
The use of Belleville springs offers several advantages over traditional spring types:
Higher Load Density: They can achieve a higher load capacity within a smaller footprint.
Consistent Performance: The unique design allows for a stable performance under varying loads and conditions.
Adjustable Stiffness: By stacking multiple Belleville springs, engineers can customize the spring rate to meet specific requirements.
Long Service Life: With proper material selection and maintenance, Belleville springs can operate effectively over extended periods.
In conclusion, Belleville disc springs are a vital component in various industries due to their ability to provide reliable force and energy storage in a compact design. Their unique working mechanism, combined with their versatile applications, makes them an ideal choice for engineers and manufacturers alike. For businesses looking to incorporate Belleville springs into their projects, it's essential to partner with a reputable supplier that understands your specific needs. If you would like to learn more about how Belleville springs can benefit your applications, contact us today.
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