Schnorr Disc Springs
SPRING PARAMETERS FOR DIMENSIONS & CALCULATION
Disc Spring Engineering
Maximum load - minimum space - maximum flexibility
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SPRING PARAMETERS FOR DIMENSIONS & CALCULATION
SPRING PARAMETERS FOR DIMENSIONS & CALCULATION
Disc springs are determined essentially by the following three parameters:
δ = Outside diameter De
Inner diameter Di
Ho/t =
Cone height Io – t
Disc thickness t
De/t = Outside diameter De
Disc thickness t
If at all possible, the parameters above should be within the following values:
δ = 1.75…2.5
ho/t = 0.4…1.3
De/t = 16…40
For smaller values δ, smaller values of ho/t and De/t also apply and vice-versa.
For steel springs with dimensions within these limits, formula 7 can be used without restriction. For very thin disc springs (De/t > 50) the formula results in spring forces which are too high.
Formula 7
For very narrow disc washers with a ratio of diameters of De/Di < 1.75, the shortening of the lever arm must be considered when calculating the force. This is brought about by the rectangular cross-section and by the rounded edges and results in the calculation of too low a load. In all such cases please contact us.
