Diamond Undercut Drill Bit 9 mm (M14) for Invisible Anchoring

A professional-grade tool designed for high-precision drilling and grinding of undercut holes. This specialized diamond drill bit is an essential component for installing ventilated facades, where invisible and maximum-security mechanical anchoring of cladding materials is required.

Thanks to advanced vacuum brazing technology, the diamond grains are fused to the tool body, providing extreme resistance to high temperatures and ensuring a long service life even during demanding dry drilling processes.

Key Advantages

• Superior Bond Strength: Creates a precise conical cavity for expansion facade anchors.

• Clean Results: Fast material removal without the risk of cracking or chipping expensive cladding slabs.

• High Efficiency: The aggressive diamond layer allows for rapid work with minimal pressure.

• Aesthetics: Enables the realization of facades with hidden anchoring—the connection is completely invisible from the front side.

Technical Specifications

• Tool Body Diameter: 9 mm (diamond segment)

• Final Undercut Diameter: 11.3 mm

• Mounting: Standard internal M14 thread (compatible with all standard angle grinders)

• Segment Dimensions: Total shank length including the diamond cone is 20 mm

• Stability: Robust 6.7 mm wide shank for maximum precision without vibrations

• Material Suitability: Ideal for porcelain stoneware (gres), ceramics, natural stone, and granite

Application Method

The drill bit is used to create specific holes from the rear side of the cladding material. A specialized facade anchor is then inserted into the prepared hole and safely expanded within the wider cavity (11.3 mm). The result is a certified, extremely strong connection suitable for heavy-duty facade systems.

Recommendation: To extend the lifespan of the diamond coating, we recommend using a slight circular motion during drilling to facilitate better cooling and dust removal.