Dry Cutting Diamond Segment Disc STANLEY STA38107 Ø125mm for masonry and concrete

STANLEY STA38107 Ø125mm dry cutting diamond segment disc is designed for efficient cutting of masonry and concrete with angle grinders. The segmented rim uses industrial diamond abrasive to remove material quickly under dry conditions, offering a balance between cutting speed and blade life. The 125 mm diameter makes it suitable for compact grinders used on construction sites and renovation projects; users must employ the appropriate guard and personal protective equipment when cutting reinforced concrete or abrasive masonry.

Advantages

The segmented diamond rim delivers rapid cutting with controlled chip clearance to reduce clogging and overheating during dry operation. Industrial-grade diamond grains increase abrasive efficiency and durability while the 125 mm form factor ensures compatibility with a wide range of handheld angle grinders. The disc’s segment design helps maintain cutting speed on dense materials such as concrete and brick, and the construction supports consistent performance across repetitive cuts.

Suitable for

• Cutting concrete slabs and blocks
• Trimming brick and masonry units
• Making openings and notches in reinforced concrete (with correct PPE and guards)
• On-site renovation and construction tasks with angle grinders

Key specifications

• Diameter: 125 mm
• Cutting type: Dry cutting
• Rim style: Segmented diamond rim
• Material compatibility: Masonry, brick, concrete, lightweight blocks
• Mounting: For 125 mm angle grinders (standard arbor)

How to use

Fit the disc to a compatible 125 mm angle grinder according to the grinder manufacturer’s instructions, ensuring the disc is secure and the guard is correctly positioned. Start the grinder and allow it to reach full speed before initiating the cut. Use steady, controlled motions and avoid applying excessive pressure; let the diamond segments perform the cutting. For reinforced concrete, make shallow passes to prevent binding and reduce heat build-up. After use, allow the disc to cool before handling or storing.

Usage recommendations

Always wear appropriate PPE including eye protection, hearing protection, respiratory protection suitable for dust generated when dry cutting, and protective gloves. Use the correct guard and follow the grinder’s safety instructions. For extended cutting tasks or when minimizing dust is required, consider wet cutting alternatives or dust extraction systems.