RHODIUS LD40 125mm Diamond Cutting Disc for Concrete, Reinforced Concrete, Masonry, 22.23mm Bore, Segmented, Laser Welded

On a busy construction site, a contractor reaches for the RHODIUS LD40 diamond cutting disc to slice through a reinforced concrete slab. The 125 mm segmented blade, laser welded for durability, powers through dense material with an angle grinder, leaving clean edges without chipping. Its 22.23 mm bore fits standard grinders, and the 7 mm segment height provides a long service life even under dry cutting conditions. This disc is part of the PROline series, engineered for universal performance across common building materials.

Key specifications

• Diameter: 125 mm
• Bore diameter: 22.23 mm (7/8 inch)
• Segment height: 7 mm
• Cutting width (kerf): 2.2 mm
• Segment type: Laser welded, segmented
• Max rotational speed: 12,200 RPM
• Tool compatibility: Angle grinder
• Cutting application: Dry cutting
• Standard compliance: EN 13236
• Disc body material: Steel
• Diamond segment material: Industrial diamonds in metal matrix

Why choose it

The LD40 is built for professionals who need reliable performance on a daily basis. Laser-welded segments ensure they stay firmly attached even under high stress, reducing the risk of segment loss. The optimized diamond matrix delivers a balance of cutting speed and lifespan, making it a cost-effective choice for universal cutting tasks. Its 125 mm size is ideal for handheld angle grinders, offering excellent control and maneuverability in tight spaces.

Ideal use cases

• Cutting concrete and reinforced concrete
• Slicing masonry, paving slabs, and roof tiles
• Working with sand-lime brick, Poroton, and Ytong
• General building material cutting on construction sites
• Dry cutting applications with angle grinders

Good to know

This disc complies with EN 13236 safety standards for diamond tools. It is designed for dry cutting only—do not use with water. Always wear appropriate personal protective equipment, including eye and hearing protection, and ensure the grinder's speed does not exceed 12,200 RPM. The disc is sold individually, and its 22.23 mm bore fits most standard angle grinders without the need for additional bushings.