Sanding Disc for Metal Bosch R444 Expert, 1 pc

The Bosch R444 Expert sanding disc for metal is a single-piece abrasive disc designed for use with compatible angle grinders and sanding systems. Engineered for metalworking tasks, it combines a stable vulcanised fibre backing with semi-friable aluminium oxide grit to deliver even material removal and a consistent surface finish. The disc is intended for deburring, welding preparation, blending and removal of rust, scale, discoloration and other surface imperfections on a variety of metal types.

Advantages

The stable vulcanised fibre backing provides work stability and supports a steady, controlled grinding process. The semi-friable aluminium oxide abrasive ensures effective cutting on carbon and mild steel, aluminium, non-ferrous metals and cast iron while promoting consistent finish quality. A fully synthetic resin bond secures the abrasive grains to the backing for durable performance during metal preparation tasks.

Suitable for

• Deburring edges and removing burrs after cutting or machining
• Weld preparation and weld seam blending
• Removing rust, scale and surface discolouration
• Smoothing stock and correcting surface imperfections on various metals
• Surface preparation prior to painting, coating or further finishing

Key specifications

• Abrasive type: semi-friable aluminium oxide
• Backing material: vulcanised fibre for stability
• Bonding: fully synthetic resin
• Intended materials: carbon steel, mild steel, aluminium, non-ferrous metals, cast iron
• Packaging: supplied as a single disc
• Compatible tool: angle grinders and compatible sanding systems

How to use

Fit the sanding disc securely to the compatible angle grinder or sanding system according to the tool manufacturer’s instructions. Use appropriate rotational speed and steady pressure to achieve uniform material removal; avoid excessive force that could overheat the surface or accelerate wear of the abrasive. Move the disc smoothly across the workpiece in overlapping passes for consistent results. Replace the disc when cutting performance or surface finish degrades.

Usage recommendations

Wear suitable personal protective equipment including eye protection, gloves and hearing protection. Work in a well-ventilated area or use extraction to remove dust and particles. Verify compatibility of disc size and attachment method with your angle grinder before use and follow all safety guidelines provided by the tool manufacturer.