3M 3M07540 Ceramic Straight Disc Brush 36 Grit 1 Inch

Product Description

The 3M 3M07540 is a 1-inch ceramic abrasive straight disc brush designed for aggressive material removal in metal fabrication, weld prep, and surface conditioning applications. Built with 36-grit ceramic abrasive in a very coarse grade, this brush delivers high cut rates on hard metals and tough coatings. The Type R Quick-Change connector allows rapid attachment and removal without tools, minimizing downtime during high-production work. Round filaments with a 3/4-inch trim length provide consistent contact across the work surface. Licensed trade professionals and fabricators handling deburring, rust removal, or surface prep work will find this brush suited to demanding conditions.

This disc brush is intended for use with Type R Quick-Change compatible angle grinders and die grinders rated for high-speed operation. Typical applications include weld seam cleanup, rust and scale removal, paint stripping, and edge deburring on steel, iron, and other ferrous metals. The 0.37-inch arbor hole accommodates standard mandrel sizes used with Type R tooling systems. Sold in a package quantity of six, this brush is practical for shop environments where abrasive consumption is high and consistent restocking is needed.

Key Features

• 36-grit ceramic abrasive in very coarse grade for aggressive cut rates on hard metals
• Type R Quick-Change connector for fast, tool-free disc swaps
• 1-inch outside diameter for use in tight clearance and detail areas
• Round filament shape with 3/4-inch trim length for consistent surface contact
• Rated to 30,000 RPM for compatibility with high-speed rotary tools
• 0.37-inch arbor hole fits standard Type R mandrel tooling

Compatibility

Designed for use with Type R Quick-Change compatible rotary tools and angle grinders. Consult tool manufacturer specifications to confirm maximum RPM rating meets or exceeds 30,000 RPM before use.

Installation Notes

Installation is performed by trade professionals using Type R Quick-Change mandrels mounted in compatible rotary or grinding tools. Verify the tool spindle speed rating does not exceed the 30,000 RPM maximum before mounting. Secure the mandrel per tool manufacturer instructions and confirm the disc is fully seated before operating. Always wear appropriate PPE including eye protection and gloves when operating abrasive disc brushes.