Drilling Feed Rate Calculator

Inputs

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Cutting diameter of the drill.
mm
Drill rotational speed.
rpm
Axial advance for each spindle revolution.
mm
Required depth at full drill diameter, before adding the drill point allowance.
mm
Included angle of the drill point. Common twist drills are 118 or 135 degrees.
°
Hole count for total drilling time.
holes

Results

Default result
Edit inputs
Drilling feed rate(Vf)
96mm/min
Pass

Feed rate = feed per revolution times spindle RPM.

Vf = fn*n.

Also computed

Time per hole(t)0.2917min

Total drilling time(T)3.501min

Material removal rate(Q)7.54cm³/min

Cutting speed(Vc)37.7m/min

Drill point allowance(Lp)3.004mm

Programmed depth(H+Lp)28mm

Method notes 3 notes
  • Cycle time here is cutting feed time only. It does not include rapids, peck retracts, dwell, tool changes, spot drilling, chip clearing or operator handling.
  • Point allowance assumes a sharp conical drill point. Flat-bottom drills, regrinds, split points and spotting strategy change the practical depth.
  • Use toolmaker feed and speed recommendations for the drill grade, coolant, material, hole depth ratio and rigidity.

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