Solid carbide NC-center drill

Solid carbide NC-center drills are designed to create a precise countersink that reliably guides subsequent drills and prevents the tool from wandering. Their short, highly rigid design ensures exact tool positioning from the very first contact with the workpiece. The high dimensional stability and wear resistance of the solid carbide ensure reproducible results, even in hard or tough materials. The defined tip geometry creates a clean, centered surface that allows the main drill to enter the hole safely and in a straight line.

Applications

NC-center drills are used wherever high positioning accuracy is required. They prepare the material for twist drills, deep-hole drills or reamers and minimize the risk of material displacement or misalignment. Typical applications include fit holes, functional holes, or threaded cores in steels, stainless steels, cast iron and alloys. Especially in automated CNC processes, NC-center drills provide reliable orientation, ensuring that subsequent tools can operate stably and with repeatable accuracy.

Technical Specifications

NC-center drills feature a special tip shape that creates a flat, defined countersink and controls the penetration of the subsequent tool. The short cutting length and high tool rigidity minimize lateral deflection. Polished flutes or sharply defined cutting edges ensure smooth tool engagement, while coatings reduce friction and improve tool life. The precise geometry ensures that the tool cuts cleanly even under increased contact pressure.

Selection criteria

The selection of an NC-center drill depends on the point angle, material group, machine rigidity and the geometry of the subsequent drill. The countersink angle should be selected so that the main drill rests completely and securely on the workpiece. Stable tool clamping, low runout and a uniform feed rate are crucial for reproducible countersinks and precise subsequent drilling operations.

What is an NC-center drill used for?

For precise countersinks that guide subsequent drill bits accurately and prevent them from veering off course.

Why is the compact design important?

It increases the tool's rigidity and reduces lateral deflection during initial drilling.

What materials is an NC-center drill suitable for?

For steel, stainless steel, cast iron and numerous alloys.