Diamond Grinding Disc MODECO 125x22.23 mm MN-78-412 for Concrete

The MODECO Diamond Grinding Disc 125 x 22.23 mm (MN-78-412) is designed for grinding and smoothing concrete surfaces. Fitted with industrial-grade diamond abrasive, the disc enables efficient material removal, surface leveling and preparation of concrete before sealing, painting or applying other floor coatings. It is intended for use with compatible angle grinders and concrete grinders, offering a compact 125 mm diameter for access to edges and confined areas.

Advantages

The diamond segments provide high cutting performance and sustained abrasive life when working on dense or reinforced concrete. The disc’s diameter and center bore are compatible with common hand-held grinders, allowing straightforward mounting and secure operation. Its construction promotes stable grinding with reduced vibration and consistent surface finish across large and small areas. The open segment design improves debris removal and cooling during continuous use.

Suitable for

• Removing high spots, laitance and thin surface layers from concrete
• Leveling uneven concrete floors and slabs
• Preparing surfaces before applying coatings, sealers or adhesives
• Renovation and repair tasks on sidewalks, driveways and industrial floors
• Edge and detail grinding in confined or hard-to-reach areas

Key specifications

• Diameter: 125 mm
• Arbor/center bore: 22.23 mm
• Abrasive type: diamond segments
• Primary material application: concrete
• Typical use: heavy-duty grinding, leveling and surface preparation

How to use

Mount the disc on a compatible angle grinder or concrete grinder following the tool manufacturer’s instructions and ensuring the correct arbor adapter if required. Start with moderate contact pressure and a steady, overlapping pass technique to achieve even removal across the surface. Maintain proper rotational direction and avoid side-loading the disc. Allow the disc to cool periodically during extended use to preserve segment life and prevent overheating.

Usage recommendations

Use appropriate personal protective equipment including eye protection, hearing protection, dust mask or respirator, and protective gloves. Operate the grinder at the recommended speed range for 125 mm diamond discs and ensure adequate dust extraction or wet suppression when working on concrete to minimize airborne respirable dust.