Makita D-44622 Diamond Core Drill Bit 70 mm for Granite, Marble and Tile

The Makita D-44622 Diamond Core Drill Bit is a professional-grade tool designed for precision drilling in demanding materials. With a 70 mm diameter, this core bit is specifically engineered to handle the hardness of granite, marble, and ceramic tiles, providing clean and accurate results for every application. Its robust construction ensures consistent performance and longevity, making it a reliable choice for construction professionals and renovation experts who require high-quality outcomes when working with dense stone surfaces.

Advantages

This diamond core drill bit offers exceptional cutting efficiency, allowing for smooth penetration through tough materials without causing unnecessary damage or cracking. The high-quality diamond grit ensures a long service life, reducing the frequency of replacements and maintaining consistent drilling speed over time. Its design minimizes vibration and heat buildup, which helps in achieving precise hole placement and maintaining the structural integrity of the workpiece.

Suitable for

• Drilling holes in granite countertops
• Creating openings in marble slabs
• Installing fixtures in ceramic tiled walls or floors
• Renovation projects involving dense stone materials

When it may not be suitable

This drill bit is not intended for use on soft materials like wood, plastic, or metal, as it may cause damage to the bit or the material itself. It is also not suitable for hammer drilling modes and should only be used with rotary action to prevent premature wear or breakage.

Key specifications

• Diameter: 70 mm
• Material compatibility: Granite, marble, ceramic tile
• Application type: Rotary drilling

How to use

To achieve the best results, ensure the drill bit is securely mounted in a compatible rotary drill. Begin the drilling process at a low speed to establish a starting point, then gradually increase the speed while maintaining steady, moderate pressure. It is highly recommended to use a water cooling system during operation to prevent overheating, which extends the life of the diamond segments and ensures a cleaner cut.

What to consider before purchase

• Verify the diameter matches your specific project requirements
• Ensure your drill tool supports the necessary mounting interface
• Confirm that your equipment is capable of rotary-only operation

Usage recommendations

Always wear appropriate personal protective equipment, including safety glasses and dust masks, when drilling stone. Keep the drill bit cool with water during use to maintain performance and prevent material chipping.