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#### Symbol Chart

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

Calculating R.P.M.
R.P.M. = (1000 × ) ÷ (Pi × )
R.P.M. = (1000 × ) ÷ (3.1415926535898 × ) = NAN

Calculating S.M.M.
S.M.M. = (Pi × × ) ÷ 1000

Calculating F.P.R.
F.P.R. = ÷
F.P.R. = ÷ = NANmm

Calculating MM.P.M.
MM.P.M. = × ×

Calculating F.P.T.
F.P.T. = ÷ ( × )
F.P.T. = ÷ ( × ) = NANmm

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