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KM Indexable Torque and Power Calculator – Kennametal

For Indexable Insert End Mill with KM Quick-Change Tooling

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
PSI N/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.
in. mm.
in. mm.

Machining Conditions

sfm m/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.&nbsp;
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

Safe Operating Conditions

lbN
lbN
ft lbNm
ft lbNm

Calculated Machining Conditions

RPM
(IPM)(no productivity formula)mm/min
in (chip load at the cut) mm/min
(IPM)(with productivity formula)mm/min
in.3/min MRRcm3/min3
in.2mm2

Calculated Required Power

lbf should not exceed Ft maxN
ft-lb should not exceed TpNm

Machining Power

HPckW
hpkW

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Workpiece Selection

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Material

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Hardness

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      Hardness Scale

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        Hardness (HB)

        Hardness (HRC)

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