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Schnorr Disc Springs

Disc Spring Engineering
Maximum load - minimum space - maximum flexibility

stacks in parallel

A set of ‘n’ single springs in parallel (figure 21 - c) results in the following without considering friction. 
Spring load 

Formula 20


Spring Deflection 

Formula 21


Unloaded Stack Length 

Formula 22


In this case the spring load must be multiplied by the number of springs in parallel, where as the deflection remains as for a single spring.

For springs in Group 3 with contact flats and reduced disc thickness, t must be replaced with t’ in formula 22.

Figure 21 - click to enlarge



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