Other toolsPiston forceCylinder speedGear ratioCNC cuttingCycle timeBolt torqueHardnessPress brakeBend unfoldLaser cuttingStock massCAD viewer
Drill / tap calculator
Starting RPM, feed, metric tap-drill size and hole time for twist drills and taps in steel, stainless, aluminum and cast iron.
Starting values for planning. Point angle, peck, coolant, coating and rigidity dominate — prove out on the machine.
Inputs
Workpiece
Ø
Drill Ø
mm
Hole depth
mm
Cutting speed Vc
m/min
Feed f
mm/rev
Results
Spindle speed
796rpm
- Feed rate
- 127 mm/min
- ≈ 0.13 m/min · 0.16 mm/rev
- Cutting speed Vc
- 25 m/min
- Hole time
- 9.5 s
Pecks
Through / short — no peck needed
Formulas
n = 1000 · Vc / (π · D)
vf = f · n t ≈ L / vf
Need motion hardware that matches these numbers?
Explore the TDR lineup or talk to applications engineering.