Diamond Core Drill Bit for Porcelain Gres 18 mm GRAPHITE 57H285

Diamond Core Drill Bit for Porcelain Gres 18 mm by GRAPHITE is a diamond-segmented core designed for drilling clean, precise holes in porcelain gres and other very hard ceramic materials. The 18 mm diameter is suitable for common installations where a narrow, accurate hole is required. The bit is intended for use with compatible rotary drills and benefits from water cooling to reduce heat, limit dust, and extend cutting life.

Advantages

The diamond cutting edge provides efficient cutting action through dense, vitrified surfaces while maintaining shape and edge integrity. Using water cooling reduces thermal stress and prolongs tool life, and the segmented crown design helps remove cut material for smoother penetration. Its standard 18 mm diameter supports repeatable hole sizes for plumbing, electrical routing, and fixture installation.

Suitable for

• Drilling clean holes in porcelain gres and dense ceramic tiles
• Plumbing installations for pipe and fixture passage
• Electrical conduit and cable routing through tiled surfaces
• Sampling small cores from tile and slab materials

Key specifications

• Diameter: 18 mm
• Cutting material: diamond segments
• Recommended cooling: water-cooled operation
• Compatible tool type: rotary drill / drill with appropriate adapter
• Primary material suitability: porcelain gres and hard ceramics

How to use

Install the core bit into a compatible rotary drill or drill press with the proper chuck or adapter. Mark the drilling position on the tile, secure the workpiece to prevent movement, and begin drilling at low speed to establish a steady bite. Apply a continuous or intermittent water feed to the drilling area to cool the diamond segments and wash away slurry. Maintain moderate pressure; excessive force can cause overheating or cracking of the tile. After completing the hole, stop the drill and allow the bit to cool before removing.

Usage recommendations

Use with a guide or jig for perpendicular holes and keep RPMs and feed pressure within manufacturer guidelines for porcelain gres. Wear appropriate eye and hand protection, control water run-off, and ensure the drill is powered down before changing accessories. For best results, use steady water flow and avoid dry drilling on vitrified surfaces.