Inches per Tooth

 

Inches Per Tooth Formula
\( IPT =  ( IPM \;/\; RPM )  \;/\; Z  \)
Symbol	English	Metric
\( IPT \) = Inches per Tooth	\(in\;/\;tooth\)	-
\( IPM \) = Inches per Minute	\(in\;/\;min\)	-
\( RPM \) = Revolutions per Minute	\(rev\;/\;min\)	-
\( Z \) = Number of Teeth	\(dimensionless\)	-

Machining inches per tooth, abbreviated as IPT, is the amount of material removed by each cutting edge of a tool (such as a milling cutter or a lathe tool) during one revolution of the tool.  IPT helps determine the efficiency of material removal and affects factors such as cutting forces, tool life, and surface finish.