SymbolDescription
DeOutside Diameter
DiInside Diameter
tThickness
hoCone Height
loOverall Height
sDeflection
FSpring Force (at deflection s)
FcSpring Force (at s = ho)
EModulus of Elasticity
mPoisson's Ratio
iNo. of alternating discs (or clusters) in stacked column
nNo. of discs arranged in parallel ("nested")
t'Reduced Thickness - With bearing flats
h'oIncreased cone height - With bearing flats


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Institute of Spring TechnologyMember of UK Spring Manufacturers AssociationBelleville QualityBritish Valve and Actuator Association

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