Wire cup brush MILWAUKEE S6 75x12 mm stainless steel knotted for spindle/driven tools

The MILWAUKEE wire cup brush S6 with 75 x 12 mm dimensions is a stainless steel knotted brush designed for use with spindles and driven rotary tools. Constructed with knotted stainless steel wires, this cup brush provides aggressive material removal while maintaining wire retention and durability. It is intended for cleaning, rust and paint removal, deburring and preparing metal surfaces prior to welding, painting or assembly.

Advantages

The knotted stainless steel construction offers strong cutting action for heavy-duty surface preparation and long wear life compared with untwisted or crimped brushes. Its compact 75 x 12 mm size allows access to tighter areas and fits most spindle-driven and rotary tool adapters. The wire cup format concentrates brushing force on a defined area for efficient rust, scale and paint removal on metal parts.

Suitable for

• Removing rust and scale from metal surfaces
• Stripping paint and coatings from steel and iron
• Deburring edges and weld spatter removal
• Preparing surfaces before welding, painting or adhesive bonding
• Cleaning small or confined areas with spindle or rotary tools

When it may not be suitable

This brush is made of stainless steel wire with knotted construction and is designed for aggressive metalworking tasks; it is not intended for use on soft or highly polished surfaces where scratching is unacceptable. It should not be used on masonry, wood, plastics or other non-metal materials where wire contact could cause damage or leave metallic contamination.

Key specifications

• Brush type: knotted cup brush
• Wire material: stainless steel
• Outer diameter: 75 mm
• Thickness/height: 12 mm
• Mounting: for spindle or driven rotary tools
• Typical applications: rust removal, paint stripping, deburring, surface preparation

How to use

Mount the wire cup brush securely to a compatible spindle or rotary tool following the tool manufacturer’s mounting instructions. Run the tool at an appropriate speed for knotted stainless steel wire brushes; avoid excessive speed that exceeds the brush’s safe operating RPM. Apply steady, light-to-moderate pressure and move the brush across the workpiece to remove rust, paint or burrs. Allow the brush to do the cutting—excessive pressure can reduce brush life and cause premature wear or wire breakage. After use, inspect the brush for wire loss or deformation and replace if damaged.

What to consider before purchase

• Confirm the brush diameter and mounting type fit your spindle or rotary tool
• Ensure stainless steel wire is appropriate for the material you will treat
• Check recommended maximum operating speed of your tool relative to the brush
• Consider pack quantity supplied by the manufacturer for your usage needs

Usage recommendations

Use appropriate personal protective equipment including eye protection, gloves and respiratory protection if removing coatings that may generate hazardous dust. Test on a small area to verify finish results before treating the entire surface.