Cup brush Makita D-73405 Diameter 11.5 cm Depressed centre

The Makita D-73405 cup brush with an 11.5 cm diameter and depressed centre is an accessory designed for surface preparation and cleaning when used with compatible angle grinders. Constructed to reach uneven areas and provide consistent contact with the workpiece, this cup brush removes rust, paint, scale and other surface contaminants to reveal a cleaner substrate ready for further treatment or finishing.

Advantages

The depressed centre profile improves brush stability and access into shallow recesses while maintaining even pressure across the brush face. Brass or steel wire filaments (depending on the variant) deliver effective abrasion for heavy-duty cleaning without excessive vibration when mounted correctly. The cup shape concentrates brushing action for faster material removal on flat and contoured surfaces and reduces the tendency for the tool to skip over edges.

Suitable for

• Removing rust and loose paint from metal surfaces
• Cleaning weld seams and removing slag
• Preparing metal before priming or painting
• Surface cleaning of castings and fabricated parts
• Light deburring and scale removal on steel and iron

Key specifications

• Brush type: depressed centre cup brush
• Diameter: 11.5 cm
• Mounting: compatible with angle grinders (ensure correct arbor size and rotation speed)
• Filament material: metal wire filaments suitable for heavy cleaning tasks
• Shape: cup for concentrated surface contact and contour access

How to use

Fit the cup brush to an angle grinder following the grinder manufacturer's instructions, ensuring the arbor and flange are the correct size and the brush is securely mounted. Operate the grinder at the recommended speed range for wire brushes, maintaining steady, even pressure and a controlled angle to avoid gouging the substrate. Move the tool across the surface in overlapping passes until the desired level of cleaning or preparation is achieved. Allow the brush to do the work—do not force excessive pressure, which can damage filaments and the workpiece.

Usage recommendations

Always wear appropriate personal protective equipment: eye protection, gloves, and respiratory protection when removing rust, paint or coatings. Check the cup brush regularly for wear or broken wires and replace if damaged. Use the brush on compatible materials only; avoid using metal wire brushes on soft or non-ferrous surfaces where scratching is a concern. Follow angle grinder speed limits and safety guidelines to ensure stable, safe operation.