Grinding Disc DeWalt 125 x 22 mm Extreme Runtime Diamond Wheel for Stone, Depressed Centre

The DeWalt 125 x 22 mm Extreme Runtime Diamond Wheel for Stone is a depressed-centre grinding disc engineered for use with angle grinders. Designed specifically for working with masonry and natural stone, the disc combines a diamond abrasive matrix with a reinforced carrier to enable efficient material removal while maintaining stability during operation. Supplied as a single disc, it is intended for tasks that require durable abrasive performance and a longer service life compared with conventional abrasive wheels.

Advantages

The depressed-centre form factor provides a low-profile mounting that improves access to edges and reduces interference when grinding close to surfaces. The diamond cutting surface delivers consistent grinding speed and enhanced wear resistance, helping to extend runtime under typical masonry and stone applications. The disc’s construction balances cutting aggressiveness with control to reduce glazing and maintain performance throughout its usable life.

Suitable for

• Shaping and smoothing natural stone and concrete surfaces
• Removing mortar, uneven joints and surface imperfections
• Edge work and profiling on masonry elements
• Preparation of stone surfaces before bonding or sealing

Key specifications

• Diameter: 125 mm
• Arbor hole: 22 mm
• Design: depressed-centre grinding disc
• Abrasive type: diamond matrix suitable for stone and masonry
• Form: single disc supply

How to use

Fit the Extreme Runtime diamond wheel to a compatible angle grinder with a 22 mm arbor, ensuring the machine is disconnected from power before mounting. Secure the disc using the correct flange and nut, and confirm that the wheel is tightly fastened and runs true by performing a short spin check at low speed. Operate the grinder at the manufacturer’s recommended speed range for 125 mm discs, applying steady, controlled passes without forcing the disc into the material. Use light to moderate pressure and keep the grinding motion continuous to avoid overheating localized areas on the stone.

Recommendations

Wear appropriate personal protective equipment including eye protection, hearing protection, gloves and a dust mask or respirator for stone dust. Use water suppression or local extraction where possible to reduce dust exposure, and allow the disc to cool periodically during extended use. Inspect the disc before each use for damage or excessive wear and replace if any cracks, deformation or missing segments are found.