Speeds/Feeds (Metric)


m/min = Meters Per Minute
RPM x .00314 x Diameter of tool

RPM = Revolutions Per Minute
m/min x 318.057 ÷ Diameter of tool

mm/min = Millimeters Per Minute, Feed Rate
RPM x MMPT x #FL
#FL = # of Flutes

MMPT = Millimeters Per Tooth, Chipload
mm/min ÷ (RPM x #FL)
#FL = # of Flutes

MMPR/FR = Millimeters/Feed Per Revolution
mm/min ÷ RPM

MR = Cubic Meters Per Minute, Metal Removal
(ADC (mm) x RDC (mm) x mm/min) ÷ 1000
ADC (mm) = Axial Depth of Cut (mm)
RDC (mm) = Radial Depth of Cut (mm)

HP = Horsepower Required
mm/min x RDC (mm) x ADC (mm) x .001 x PC
RDC (mm) = Radial Depth of Cut (mm)
ADC (mm) = Axial Depth of Cut (mm)
PC = Power Constraints


Conversions:
○ SFM to m/min: SFM x .3048
○ IPM to mm/min: IPM x 25.4
○ m/min to SFM: m/min ÷ .3048
○ mm/min to IPM: mm/min ÷ 25.4
○ HP (Standard) to HP (Metric): HP (Standard) x 16.3871


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