Diamond Undercut Drill Bit 13 mm (M14) for Invisible Anchoring

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

Utilizing advanced vacuum brazing technology, the diamond grains are fused to the tool body, ensuring extreme heat resistance and an extended lifespan, even during demanding dry drilling applications.

Key Features & Benefits

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

• Clean & Precise 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.

• Aesthetic Perfection: Enables the realization of facades with hidden anchoring—the connection remains completely invisible from the front side.

Technical Specifications

• Body Diameter: 13 mm (diamond segment)

• Final Undercut Diameter: 15.5 mm to 18 mm

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

• Segment Dimensions: Total shank length with the diamond conical segment is 20 mm

• Stability: Robust 8 mm wide shank ensures maximum precision without vibrations

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

Application & Usage

This drill bit is used to create specific conical 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 section (15.5 mm). The result is a certified, extremely strong connection suitable for heavy-duty facade systems.

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