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→6.4.7 Contact Spring Calculations
:<math>\sigma _{max} = \frac {3 x E x D}{2L^2}x_{max}</math>
The stress limit is defined through the fatigue limit and the 0.2% elongation limitresp.:<math>x _{max} = \frac {2 x L^2}{3 x D x E}R_{p0,2}</math>