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Symbol Chart

D	=	Depth of Cut (in inches)
d	=	Diameter of Cutter (in inches)
T	=	Number of Teeth in Cutter
W	=	Width of Cut (in inches)
K	=	Constant (cubic inches per minute per HPc)
R.P.M.	=	Revolutions per Minute
S.F.M.	=	Surface Feet per Minute
F.P.R.	=	Feed per Revolution (in inches)
I.P.M.	=	Feed (travel in inches per Minute)
F.P.T.	=	Feed per Tooth (in inches)
HPc	=	Horsepower at the Cutter

Calculating R.P.M.

R.P.M. = (12 × ) ÷ (Pi × )
R.P.M. = (12 × ) ÷ (3.1415926535898 × ) = NAN

Calculating S.F.M.

S.F.M. = (Pi × × ) ÷ 12

Calculating F.P.R.

F.P.R. = ÷
F.P.R. = ÷ = NANin

Calculating I.P.M.

I.P.M. = × ×

Calculating F.P.T.

F.P.T. = ÷ ( × )
F.P.T. = ÷ ( × ) = NANin

Calculating HPc

HPc = ( × × ) ÷
HPc = ( × × ) ÷ = NAN

Calculating Number of Teeth

No. of Teeth = ÷ ( × )
No. of Teeth = ÷ ( × ) = NAN

Calculating Maximum Number of Teeth

Max. No. of Teeth = ( × ) ÷ ( × × × )
Max. No. of Teeth = ( × ) ÷ ( × × × ) = NAN