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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