Belleville Disc Washer Springs - Learn About

High Loads in Small Spaces

When your compression spring application requires a high load in small spaces, Lee Spring's Belleville Disc Washers can be the solution. Their conical configuration enables them to support high loads with relatively small deflections and solid heights compared to helical springs. Belleville Washers are often used to solve vibration, thermal expansion, relaxation and bolt creep problems.

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Lee Spring Standard Series Belleville Disc Washers are manufactured from 300 Series Stainless Steel. Additionally, Lee Spring Standard Series Belleville Disc Washers are passivated in accordance with specification ASTM A967 (supercedes QQ-P35) to remove contaminants and further improve resistance to corrosion. 300 Series Stainless Steel is slightly magnetic and is recommended for applications with temperatures up to 500°F (260 °C).

The Lee Spring DIN Belleville Disc Washer Series offers metric disc spring washers to meet global demand for sizes specified by DIN .  Lee Spring also expand on size options past DIN ’s standard size tables, made to DIN manufacturing and quality specifications to provide component flexibility for product designers. DIN Belleville Disc Washers are made with 51CrV4 spring steel (AISI ) and finished with a phosphate and oil surface for general protection from corrosion. 

DIN Belleville Disc Washer Series designs are classified into three groups based on the material thickness:

Group 1 – This range applies to disc spring washers with material thickness less than 1.25mm.  Lee Spring DIN Belleville Disc Washer Series include 88 sizes in Group 1, over a selection of outside diameters from 6mm (0.236”) to 40mm (1.575”) with inside diameters from 3.2mm (0.126”) to 20.4mm (0.803”).

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Group 2 – This range applies to disc spring washers with material thickness from 1.25mm through 6mm.  Lee Spring DIN Belleville Disc Washer Series include 161 sizes in Group 2, over a selection of outside diameters from 20mm (0.787”) to 200mm (7.874”) with inside diameters from 10.2mm (0.402”) to 102mm (4.016”).

I am using M2, brass nickel-plated spring washers. The surrounding environment is where the temperature changes from -160 ° C to 250 ° C, and when I removed the nut that was tightened to it, the gap on the spring washer disappeared. Under such an environment, will the above materials be distorted and lose their function? Also, are there any general spring washers that are resistant to the above temperatures?

If it is a plated product, the material is probably carbon steel, and in this case, the operating temperature should be about -50 to + 100°C. So, if it is used in a temperature range higher than that, it will deform. I think that SUS304 material is suitable if the spring washer is used in the temperature range of -160 °C to 250°C, but some fatigue may still occur depending on the usage environment (max 250°C for a long time, etc.).

I think that there are some products with a heat resistance of 300°C or higher in the world, but are such products custom-made? (Especially this time it is as small as M2)

We would recommend Inconel X750 material for heat resistance of 300°C or higher, but I think it is difficult to make a custom-made M2 size washer for your inquiry. (By the way, the minimum size of the disc springs that we can make with Inconel material is 0.5t thickness x outer diameter φ10, inner diameter φ5.2 or more.)

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