Spring Mean Coil Diameter

Written by Jerry Ratzlaff on . Posted in Fastener

spring compression 6formulas that use Spring Mean Coil Diameter

\(\large{ D = D_o - d  }\)   
\(\large{ D = D_i + d  }\)   

Where:

\(\large{ D }\) = mean coil diameter

\(\large{ D_i }\) = inner diameter

\(\large{ D_o }\) = outer diameter

\(\large{ d }\) = wire diameter

Solve for:

\(\large{ D_i = D_o - 2 \; d  }\)

\(\large{ D_o = D_i + 2 \; d  }\)

 

Tags: Equations for Spring