3M 7100054509 Flap Brush 12x1x5 Medium Aluminum Oxide

Product Description

The 3M 7100054509 is a cut-and-polish flap brush engineered for heavy-duty surface finishing applications where a higher-polished result is required. Individual abrasive sheets are adhered at a 90-degree angle to the core, allowing the brush to cut and polish in a single pass. The abrasive mineral is medium-grade aluminum oxide, selected for its consistent cut rate and durability across metal, composites, and painted surfaces. The hard density construction extends wheel life while reducing conformability, making it suitable for flat and near-flat workpieces where controlled material removal is the priority.

This flap brush is used in industrial, fabrication, and maintenance settings where surface preparation or finishing is performed on metal components, welds, or coated substrates. It is suited for bench or pedestal grinder setups where consistent polish quality across production runs is required. Metalworkers, fabricators, and maintenance technicians working in manufacturing, shipbuilding, and general industrial environments are the primary users of this tool.

Key Features

• Individual abrasive sheets mounted at 90 degrees to the core for combined cutting and polishing action
• Medium-grade aluminum oxide abrasive mineral for controlled cut rate on metal and composite surfaces
• Hard 7 density construction for extended service life and low conformability on flat workpieces
• Heavy-duty design rated for applications requiring higher-polished surface finishes
• Weighs 2.03 pounds for stable, balanced operation on stationary grinder setups

Compatibility

Designed as an OEM-style replacement or direct-use flap brush for bench and pedestal grinder spindles accepting a 5-inch bore mount with a 12-inch face width.

Installation Notes

Installation should be performed by a qualified technician following the grinder manufacturer's mounting instructions. Disconnect and lock out power to the grinder before mounting or removing the flap brush. Verify that the grinder's rated RPM does not exceed the maximum operating RPM marked on the wheel or brush assembly. Inspect the brush for damage before each use and never operate a damaged or out-of-balance wheel.

Technical Specifications

• Dimensions: 12 inches x 1 inches x 5 inches
• Abrasive Grade: Medium
• Abrasive Mineral: Aluminum Oxide
• Density: Hard 7
• Weight: 2.03 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100054509