What is the best Tieflochbohrer for drilling?

Tieflochbohrer for drilling depends on Materialhärte, hole depth, und coolant delivery. Our calculator provides optimized parameters for solid carbide drills.

How does Tieflochbohrer affect thread quality?

Proper Tieflochbohrer ensures clean thread profiles, reduces tap breakage, und extends Werkzeugstandzeit in both through-hole and blind-hole tapping applications.

Bohren, Gewinden & Gewinde

Tieflochbohren berechnen

TiAlN Beschichtung Vorteile Hartmetall. Erhalten Sie sofortige Coolant Pressure (bar), Feed Rate (mm/rev), RPM für Ihre Zerspanungsparameter.

Eingabeparameter

Bohrungsdurchmesser (mm)

Bohrungstiefe (mm)

Werkstoff

Ergebnisse

Coolant Pressure (bar)—

Feed Rate (mm/rev)—

Drehzahl (U/min)—

Gun drilling coolant pressure and feed formulas

Gun drilling produces deep, straight holes (up to 100× diameter) using high-pressure coolant through the tool. Correct coolant pressure and feed are critical -- too little pressure and chips pack; too much feed and the drill wanders.

Coolant pressure (bar) ≈ 20 + (depth / diameter) × 5
Feed rate (mm/rev) ≈ diameter × 0.001
RPM ≈ 80,000 / (π × diameter) -- for HSS/Carbide in steel

How to use this Gun Drill Parameters Calculator

Enter the drill diameter and hole depth. The calculator recommends coolant pressure, feed per revolution, and spindle RPM. These are starting values -- adjust based on material, coolant type, and machine capability.

Common mistakes to avoid

Starting without a pilot hole or guide bushing -- gun drills have no self-centring capability.
Running too little coolant pressure -- chips pack in the V-flute and the drill seizes. When in doubt, use more pressure.
Assuming gun drills work like twist drills -- they require dedicated machines or spindles with high-pressure through-coolant.

Related CNC calculators

Continue with closely related tools from the machining calculator library.

Drill Point Length Peck Drilling Countersink Depth Reaming Allowance Tap Drill Size Coolant Concentration

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