Diamond grinding disc Dedra HP042 180 mm 2-seg for concrete and stone

Diamond grinding disc Dedra HP042 180 mm 2-seg is designed for aggressive material removal and surface preparation on concrete and natural stone. The 180 mm diameter and two-segment configuration allow efficient cutting of coatings, leveling of uneven areas, and removal of old mortar or adhesive residues. The disc is intended for use with angle grinders that accept standard 180 mm discs and provides a balance between stock removal rate and control for renovation and construction tasks.

Advantages

The two-segment diamond rim provides strong abrasion capability while maintaining good cooling and reduced clogging during extended use. Its 180 mm size offers a compromise between reach and maneuverability, making the disc suitable for both small repair jobs and broader surface preparation. The segmented design helps disperse debris and heat, improving life span and consistent performance on concrete and natural stone.

Suitable for

• Removing coatings, paint, and adhesives from concrete surfaces
• Leveling and smoothing uneven concrete and stone floors
• Removing old mortar from joints and preparing surfaces for regrouting
• Preparation of surfaces prior to polishing, sealing, or laying new coverings

Key specifications

• Diameter: 180 mm
• Segment type: 2-segment diamond rim
• Primary materials: concrete and natural stone
• Intended tool: angle grinder compatible with 180 mm discs
• Primary application: material removal and surface preparation

How to use

Fit the Dedra HP042 diamond grinding disc to an angle grinder with the correct mounting and guard in place. Start the grinder at low speed to check balance, then use steady, even passes across the surface at a moderate speed to control material removal. Apply light to medium pressure; excessive force can reduce cutting efficiency and increase wear. Use overlapping strokes to ensure uniform grinding and periodically inspect the disc for wear or clogging. Allow occasional cooling pauses during extended sessions to preserve diamond life.

Usage recommendations

Wear appropriate personal protective equipment including eye, hearing and respiratory protection. Use water cooling only if the tool and disc are rated for wet use; otherwise operate dry with dust extraction or local ventilation to reduce airborne particles. Test the disc on a small area before full use to confirm expected material removal and finish.