Circular Pitch

Circular pitch, abbreviated as CP, is the measured distance along the circumference of the pitch diameter from the point of one tooth to the corresponding point on an adjacent tooth.

 

Circular Pitch formula
\(\large{ CP = \frac{\pi\;PD}{n_t} }\)
Symbol	English	Metric
\(\large{ CP }\) = circular pitch	\(\large{in}\)	\(\large{mm}\)
\(\large{ n_t}\) = number of teeth	\(\large{dimensionless}\)
\(\large{ \pi }\) = Pi	\(\large{3.141 592 653 ...}\)
\(\large{ PD }\) = pitch diameter	\(\large{in}\)	\(\large{mm}\)

 

Circular Pitch formula
\(\large{ CP = \frac{\pi}{DP} }\)
Symbol	English	Metric
\(\large{ CP }\) = circular pitch	\(\large{in}\)	\(\large{mm}\)
\(\large{ DP }\) = dimetrical pitch	\(\large{in}\)	\(\large{mm}\)
\(\large{ \pi }\) = Pi	\(\large{3.141 592 653 ...}\)