KM Solid End Mill Torque & Horsepower Calculator – Kennametal

For Solid 0º Lead Angle - Positive Rake Helical End Mills 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
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

Machining Conditions

sfm m/min
in.(DOC) mm (DOC)
in.(WOC) mm(WOC)
in. IPT (chip load) mm
Most Common Workpiece Materials Cm at W/D ratios:
W/D < = 0.66 0.66 < W/D < 1.0 W/D = 1.0
Aluminum alloys 1.0 1.05 1.1
Carbon and alloy steels 1.0 1.15 1.3
Cast irons 1.0 1.15 1.3
Titanium alloys 1.0 1.20 1.4
Stainless steel, High-temperature alloys 2.0 2.15 2.3
Milling Depth of cut Feed per tooth Cw
Category (min-max), in. (min-max), in. &nbsp;
Light 0.020-0.100 0.003-0.006 1.1
Medium 0.100-0.200 0.006-0.010 1.2
Heavy duty 0.200-0.400 0.010-0.020 1.3
Direct Belt Drive .9
Back Gear Drive .75
Geared Head Drive .7-.8
Oil - Hydraulic Drive .6-.9
Safe Operating Conditions

Safe Operating Conditions

lb N
lb N
ft lb Nm
ft lb Nm
Calculated Machining Conditions

Calculated Machining Conditions

RPM
(IPM)(no productivity formula) mm/min (no productivity formula)
in (chip load at the cut) mm/min
(IPM)(with productivity formula) mm/min
in.3/min MRR cm3/min3
in.2 mm2
Calculated Required Power

Calculated Required Power

lbf should not exceed Ft max N should not exceed Ft max
ft-lb should not exceed Tp Nm should not exceed Tp

Machining Power

HPc kW
hp kW
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