Free Material Removal Rate Calculator
Calculate the volumetric material removal rate (MRR) in a milling operation.
mm
mm
mm/min
Material Removal Rate
24.00 cm^3/min
MRR24,000 mm^3/min
Material Removal Rate vs Table Feed Rate (Vf)
Material Removal Rate in Milling
MRR quantifies how fast material is being removed, which directly relates to productivity and power consumption.
Formula
MRR = ap x ae x Vf
where ap is the axial depth of cut, ae is the radial width of cut, and Vf is the table feed rate. The result in mm^3/min can be divided by 1000 for cm^3/min.
Example Calculation
Milling with 3 mm depth, 20 mm width, at 400 mm/min feed.
- 01MRR = 3 x 20 x 400 = 24,000 mm^3/min
- 02MRR = 24,000 / 1000 = 24 cm^3/min
- 03For steel with specific cutting energy of 2.5 W-s/mm^3, power = 24000/60 x 2.5 = 1000 W = 1 kW at spindle.
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