Diamond Cutting Disc Irwin 125 mm × 22.23 mm Segmented — for Concrete, Brick, Granite, Marble

Segmented diamond cutting disc by Irwin, diameter 125 mm with 22.23 mm bore, created for cutting concrete, brick, granite and marble. The segmented rim design enhances cooling and chip clearance, enabling sustained cutting performance on masonry and natural stone. Compatible with angle grinders and handheld cutters that accept a 22.23 mm arbor, this disc is intended for construction, renovation and stonework operations where controlled, efficient material removal is required.

Advantages

The segmented diamond rim provides fast cutting speed while maintaining lower heat buildup compared with continuous-rim blades. Slotting between segments improves dust and debris evacuation, reducing clogging and keeping the cutting edge exposed for longer. The 125 mm diameter offers a balance between portability and cutting depth, and the standard 22.23 mm bore fits common angle grinder arbors. The blade construction is aimed at consistent performance across abrasive materials like concrete and brick as well as harder natural stones such as granite and marble.

Suitable for

• Cutting concrete slabs, blocks and panels
• Trimming and cutting masonry units such as bricks and pavers
• Profiling and cutting granite and marble tiles or countertops
• On-site renovation work with handheld angle grinders

Key specifications

• Disc diameter: 125 mm
• Bore (arbor) diameter: 22.23 mm
• Rim type: Segmented diamond rim for masonry and natural stone
• Compatible tools: Angle grinders and handheld cutters with matching arbor size
• Primary materials: Concrete, brick, granite, marble

How to use

Mount the disc securely on an angle grinder or handheld cutter with a 22.23 mm arbor, following the tool manufacturer’s instructions and ensuring the disc rotation direction matches the arrow on the blade. Use appropriate personal protective equipment (safety goggles, gloves, hearing protection and dust mask) and secure the workpiece before cutting. Start cutting at moderate speed and apply steady, even pressure without forcing the blade; allow the diamond segments to do the cutting. For deeper cuts, perform multiple shallow passes rather than attempting a single deep cut to reduce stress on the disc and the tool.

Usage recommendations

Use the disc on dry or wet cutting as permitted by the angle grinder and local safety guidance; when dry cutting, take regular breaks to allow cooling and clear accumulated dust. Avoid lateral forces and side loading on the disc. Replace the blade if excessive vibration, segment damage or significant loss of cutting efficiency occurs.