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    End Milling Force, Torque, and Power Calculator – Kennametal

    For End Milling Application

    These calculations are based upon theoretical values and are only intended for planning purposes. Actual results will vary. No responsibility from Kennametal is assumed.

    Conversion of Workpiece Material Rockwell (Optional)
    Metric
    Inch

    Conversion of Workpiece Material Rockwell (Optional)

    Skip this step if you already know the Brinell hardness number(HB)
    Characteristics of Workpiece Materials

    Characteristics of Workpiece Materials

    HB
    PSIN/mm 2
    Ultimate Strength shown for generic steel. Please enter the actual value of your workpiece material if available, for better accuracy You may look up this info through websites such as www.matweb.com
    End Mill Nomenclature

    End Mill Nomenclature

    in.mm

    Machining Conditions

    sfmm/min
    in. (DOC)mm. (DOC)
    in. (WOC)mm (WOC)
    in. IPT (chip load)mm
    Most Common Workpiece MaterialsCm at W/D ratios
    W/D < = 0.660.66 < W/D < 1.0W/D = 1.0
    Aluminum alloys1.01.051.1
    Carbon and alloy steels1.01.151.3
    Cast irons1.01.151.3
    Titanium alloys1.01.201.4
    Stainless steel, High-temperature alloys2.02.152.3
    MillingDepth of cutFeed per toothCw
    Category(min-max), in.(min-max), in. 
    Light0.020-0.1000.003-0.0061.1
    Medium0.100-0.2000.006-0.0101.2
    Heavy duty0.200-0.4000.010-0.0201.3
    Direct Belt Drive.9
    Back Gear Drive.75
    Geared Head Drive.7-.8
    Oil - Hydraulic Drive.6-.9

    Calculated Machining Conditions

    RPM
    IPM (no productivity formula)mm/min (no productivity formula)
    in. (chip load at the cut)mm/min (chip load at the cut)
    IPM (with productivity formula)mm/min (with productivity formula)
    MRRcm3/min
    in.2mm2

    Calculated Required Power

    lbN
    in.-lbNm

    Machining Power

    HPckW
    hpkW

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