Diamond Slotting Blade Tvardy 125x7.5x22.23 mm PROFI for Groove Cutting

Tvardy Diamond Slotting Blade 125x7.5x22.23 mm PROFI is a specialist diamond cutting disc engineered for groove and slot cutting in masonry, concrete, brick and similar hard building materials. With a 125 mm diameter and a 7.5 mm cutting width, the blade is intended for use on compatible angle grinders and delivers controlled material removal for electrical chases, plumbing channels and renovation tasks. The 22.23 mm bore ensures secure mounting on common grinder flanges and stable rotation during operation.

Advantages

The segmented diamond rim and reinforced core provide consistent cutting performance while reducing vibration and edge wander. The narrow 7.5 mm kerf minimises material loss and reduces the need for subsequent chiselling. The blade is suitable for dry cutting applications where accurate slot dimensions and straight grooves are required, enabling faster preparation of routes for wiring and pipes compared with manual methods.

Suitable for

• Cutting grooves and slots in concrete, masonry and brickwork
• Preparing channels for electrical conduits and plumbing installations
• Renovation works where controlled material removal is needed
• Use with compatible 125 mm angle grinders for slotting operations

When it may not be suitable

This blade is designed specifically for groove and slot cutting in hard masonry-type materials and is not intended for precision finishing or polishing tasks. It is not suitable for cutting soft metals, wood, ceramic tiles requiring glazed finishes, or delicate materials that can fracture under diamond segment cutting. For wet cutting, alternative blades or methods should be considered according to the tool and job requirements.

Key specifications

• Diameter: 125 mm
• Cutting width (kerf): 7.5 mm
• Bore diameter: 22.23 mm
• Design: diamond slotting / segmented rim
• Intended use: dry slot and groove cutting in masonry and concrete

How to use

Fit the blade to a compatible 125 mm angle grinder ensuring the correct flange orientation and secure tightening of the mounting nut. Confirm the grinder’s rpm rating is within the blade’s allowed rotational speed. Mark the groove line on the workpiece and make shallow guide passes to establish the slot, keeping steady pressure and a consistent feed rate. Make several passes to reach the required depth rather than forcing a single deep cut. Use appropriate respiratory protection, eye and hearing protection and follow the grinder manufacturer’s safety instructions.

What to consider before purchase

• Confirm compatibility with your angle grinder spindle and flange size
• Check the intended material: suitable for concrete, masonry and brick
• Decide whether dry cutting is appropriate for your task or if wet cutting is required
• Assess required groove width and depth to ensure a 7.5 mm kerf meets the job requirements

Usage recommendations

For controlled slotting, perform multiple shallow passes rather than aggressive cuts, maintain a steady feed speed, and allow the blade to cool between extended cuts. Use suitable personal protective equipment and secure the workpiece to reduce vibration and improve cut accuracy.