Blog - How do I calculate disc springs?

How do I calculate disc springs?

In general, DIN2092 is the calculation method for disc springs. While this method is not the most accurate, the margin of error is acceptable for almost all applications. This calculation only applies to the standard dimensions.

 The following parameters are required:

D_e = Outer diameter
D_i = Inner diameter
l = Height
t = Thickness
h_o = Clear height

First, you calculate the coefficients.

The equation to calculate the load applied to a single disc spring to obtain a deflection s is:

The spring constant is calculated by

Then calculate the full addition of a group:

n_i = the number of disc springs in one group

g = The number of groups

k = The spring constant of one disc spring.

For example, let's take a group of 2-3-1-2 for this calculation.  It will appear as shown on the left. So a 2-3-1-2 group gives a spring constant of 3/7th of one disc spring. When reclassifying to a 3-3-2 group, one spring gives a spring constant of 6/7th. In a 4-4 arrangement a 2 spring constant of one spring (etc. etc.).

Let your disc spring stacking be calculated

At Tevema we have our own program to automatically calculate stacks of disc springs. With your order process, ask for our calculators to calculate your forces and defection on stacks of disc springs.

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