Spring Mean Coil Diameter

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 Spring Mean Coil Diameter formulas

\( D = D_o - d  \) 

\( D = D_i + d  \) 

Symbol English Metric
\( D \) = mean coil diameter \(  in \) \( mm \)
\( D_i \) = inner diameter \(  in \) \( mm \)
\( D_o \) = outer diameter \(  in \) \( mm \)
\( d \) = wire diameter \(  in \) \( mm \)

 

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Tags: Spring