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If the application involves large
numbers of deflection cycles, i.e. dynamic application, or if the
required forces or deflections are of a critical nature, we strongly
recommend that you select from the range of disc springs that conform
to the DIN 2093 specification. |
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From the range available, select the largest
possible disc spring compatible with the desired characteristics.
This will assist in maintaining the lowest possible stresses, thus
enhancing the fatigue life, and in the case of stacked columns the
greater deflection offe |
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Red by the larger diameter springs will ensure the shortest possible
stack length. |
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For static, or dynamic applications, select
a disc spring that at 75% of its total available deflection offers
the maximum force and/or deflection required. Between 75% deflected
and the 'flattened' position, the actual force/stress characteristics
become considerably greater than those calculated. |
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As a result of manufacturing processes, residual
tensile stresses occur at d , the upper inside diameter edge, which
will revert to normal compressive stresses when the disc spring
is deflected by up to approximately 15% of its total deflection.
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The fatigue life in applications involving large numbers of cyclic
deflections, will be drastically reduced by these stress reversals.
For this reason alone, it is important that disc springs used in dynamic
applications are pre-loaded to a minimum of 15% of their total available
deflection. |
