Working Depth

Working depth, abbreviated as WD, the depth of engagement, when two mating gear meshes with each other.

 

Working Depth formula
\(\large{ WD = A_g + A_p  }\)
Symbol	English	Metric
\(\large{ WD }\) = working depth	\(\large{in}\)	\(\large{mm}\)
\(\large{ A_g }\) = addendum of gear	\(\large{in}\)	\(\large{mm}\)
\(\large{ A_p }\) = addendum of pinion	\(\large{in}\)	\(\large{mm}\)