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OnBuy.com£17.59Visit shop Irwin Granite Drill Bits 5063750452982
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B&Q£19.32Visit shop - Irwin Granite Drill Bits Multi Colour (14.0mm X 160mm)
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The Irwin Granite Drill Bits (14.0mm X 160mm) are designed for professionals and serious DIYers tackling very hard materials like granite, concrete, and natural stone. They offer significantly increased hole drilling capacity and enhanced durability compared to conventional masonry bits, but require proper technique for optimal results. Key features include a robust carbide tip, rounded cutting edges, and superior hole accuracy.
| Model Part Number | n/a |
|---|---|
| Brand | Irwin |
Their main advantage is the ability to drill significantly more holes (up to 40% more) and achieve greater hole accuracy (50% more) in very hard materials like granite and concrete compared to conventional masonry bits, thanks to their enhanced carbide tip and robust design.
While they can be used with a standard drill's rotary function, they are specifically designed for and perform best with a hammer drill's percussion/impact mode when drilling into hard materials like concrete and stone.
Use it with a hammer drill, apply steady pressure without excessive force, keep it clean, allow it to cool periodically, and ensure it's suitable for the material you are drilling.
No, these bits are engineered specifically for very hard masonry materials like granite, concrete, and natural stone. Using them on softer materials like wood or metal is not recommended and can damage the bit or the material.
It means that, on average, a single Irwin Granite bit will last longer and maintain precision for more holes drilled in appropriate hard materials before needing replacement, compared to a standard masonry drill bit.
Yes, always wear safety glasses or goggles to protect your eyes from flying debris. Hearing protection is also recommended when using a hammer drill. Consider a dust mask, especially when drilling into concrete.
Ensure you are using a hammer drill on the percussion setting. Verify the drill bit is properly secured in the chuck. Apply steady, consistent pressure. Check if the material is significantly harder than intended for this bit.
Reduce excessive force or sideways pressure. Ensure the drill is not overheating; allow the bit to cool. Clean the bit and the material of any debris that might be causing friction.
Ensure the drill is held perpendicular to the surface. Avoid 'wobbling' the drill during operation. Check if the material is uniform; irregularities can affect hole size.
Pause drilling to allow the bit to cool. Use a cutting fluid or water (if appropriate for the material and drill) for lubrication and cooling. Reduce the drilling speed slightly.
Setup: Insert the 14.0mm shank into the chuck of a hammer drill. Ensure the chuck is securely tightened. Select the appropriate hammer/percussion setting on your drill.
Compatibility: Compatible with standard SDS or keyed chucks found on most hammer drills. Designed for use with impact/percussion drilling functions. Not recommended for standard rotary-only drilling in hard materials.
Care: Keep the drill bit clean from dust and debris after each use. Store in a dry place to prevent corrosion. Periodically inspect the carbide tip for any signs of damage. If the bit becomes excessively hot during use, pause to allow it to cool. Ensure you are using adequate cooling if drilling for extended periods in very hard materials.
