RPM Revolutions per Minute = (3.82 x SFM) / diameter
SFM Surface Feet per Minute = .262 x diameter x RPM
IPM Inches per Minute = FPT x RPM x number of flutes(or teeth)
Cubic IPM Required Horsepower from Machine = depth x width x IPM
FPR Feed per Revolution = IPM / RPM
IPM Inches per Minute = RPM x feed (for drilling)
FPT Feed per Tooth = FPR / number of teeth
*Please refer to manufacturers recommendations to optimize performance.


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