Solid carbide deep hole drill

Solid carbide deep hole drills are designed to produce deep holes reliably and consistently. Their stable cutting edge geometry and efficiently designed chip flutes enable controlled chip evacuation over long cutting distances. Thanks to the high hardness and dimensional stability of solid carbide, the cutting edges remain stable even under thermally and mechanically demanding conditions, ensuring precise hole diameters and clean surfaces throughout the entire depth. Deep hole drills are used in CNC machining centers, turning-milling centers and multi-spindle systems where reliable results are required over greater drilling depths.

Applications

Deep hole drills are used in applications where drilling depths ranging from 5xD to over 20xD are required. Typical applications include crankshafts, hydraulic housings, cylinder heads and complex structural components in mechanical and automotive engineering. They are suitable for materials such as steel, stainless steel, cast iron, aluminum and high-performance alloys. Especially in deep holes, the tool geometry ensures a stable process that guarantees dimensional accuracy, straightness and surface quality.

Technical Specifications

The cutting geometry of a deep hole drill is designed to reduce axial pressure and ensure stable guidance along the entire length. Polished flutes and defined chip forms prevent chip build-up and facilitate continuous chip evacuation. Internal cooling channels direct coolant directly to the cutting zone, which reduces heat and further aids chip evacuation. Coatings increase hot hardness and wear resistance and stabilize the process when machining at high cutting speeds or with tough materials.

Selection criteria

The selection depends on the drilling depth, the material, the machine rigidity and the required process reliability. Materials that produce tough chips require optimized flutes and effective internal cooling. For depths exceeding 20xD, a pilot hole is often recommended to stabilize the initial cut. Precise tool clamping and high concentricity are essential to ensure a smooth drilling path and surface quality.

What is a deep hole drill bit used for?

For deep hole drilling, where dimensional accuracy, straightness and process stability are critical.

Why are internal cooling channels important?

They direct the coolant directly to the cutting zone and aid both heat dissipation and chip removal.

What materials can be machined?

Steel, stainless steel, cast iron, aluminum and numerous alloys.