Drilling Speed and Feed Calculator
CustomPart.Net
Tool diameter (in):
Cutting speed (SFM)
× 12
÷
Tool diameter (in)
× π
=
Spindle speed (RPM)
Cutting feed (IPR)
×
Spindle speed (RPM)
=
Feed rate (IPM)
Cut length (in)
÷
Feed rate (IPM)
=
Cut time (min)
