Estimate spindle power from cutting force and cutting speed.
Using the calculator
Enter values that match the tool, material and operation. Check the unit beside each field before calculating.
Calculation
Power = force × cutting speed. Divide by 60,000 for kW when force is in newtons and speed is m/min.
Reading the result
The result follows the relationship shown on this page. Final shop settings also depend on material, tool geometry, workholding, machine capability, coolant and the actual cut.
Worked example
For example, 600 N cutting force at 180 m/min corresponds to about 1.80 kW before drivetrain losses.