Diamond drill bit

Drilling into hard materials like porcelain stoneware, ceramic, marble, and concrete requires diamond core bits specifically designed to resist abrasion and effectively dissipate the heat generated during drilling. These highly specialized tools allow for clean , precise holes in even the toughest materials.

The cutting crown features synthetic diamond particles encapsulated in a metal matrix that gradually wears away during use, continually exposing new abrasive crystals and thus maintaining cutting efficiency . The diameter of the core bits generally ranges from 6 to 150 mm, covering applications ranging from the installation of small accessories to the creation of large pipe penetrations.

The core bit body , usually made of hardened steel, ensures structural rigidity and efficient transmission of rotary power. More advanced models feature helical flutes that facilitate debris expulsion and improve cooling during drilling, features that extend the tool's life.

The diamond concentration determines the cutting capacity and durability of the drill bit: higher concentrations offer superior performance in particularly hard materials. The attachment shank must be compatible with the drill or core drill chuck used, with standard attachments including SDS-Plus, SDS-Max, or hex shanks depending on the power required.

Water cooling is often necessary to prevent overheating, which would cause diamond vitrification and rapid loss of efficiency. The optimal rotation speed varies based on the diameter: small-diameter drill bits require higher speeds, while larger ones require lower speeds but higher torque.

Makita diamond core bits are designed to offer the right balance between performance and cost, with specific solutions for various professional applications. Proper drilling pressure prevents blockages and premature wear, ensuring precise holes and professional results even in the most demanding conditions.