3M 7010308540 Straight Cartridge Roll 240 Grit 1/2 in

Product Description

The 3M 7010308540 is a straight cartridge roll designed for precision abrasive work in tight contours, bores, and hard-to-reach surfaces. Built with aluminum oxide grain on a cloth backing, this roll delivers consistent cut and finish at a 240 grit rating, placing it in the very fine grade range. At 0.5 inches in diameter, it fits standard mandrels used with die grinders and rotary tools. It is rated for a maximum of 24,000 RPM, making it suitable for high-speed finishing passes where surface refinement is the goal. Machinists, metal fabricators, and tool-and-die technicians are the primary installers of this type of abrasive.

This cartridge roll is suited for deburring, blending, and fine finishing on metal, alloy, and composite surfaces in both production and maintenance environments. The 240 grit aluminum oxide construction is well-matched to final-stage surface prep, light stock removal on hardened materials, and weld seam blending in confined areas. It is commonly used in aerospace, automotive, and general metalworking shops where tight tolerances require a controlled abrasive profile. The cloth backing provides flexibility to conform to curved and irregular workpiece geometry.

Key Features

• 240 grit aluminum oxide grain for very fine material removal and surface finishing
• Cloth backing allows conformability on curved and contoured workpiece surfaces
• 0.5 inch diameter fits standard cartridge roll mandrels on die grinders and rotary tools
• Rated to 24,000 RPM for compatibility with high-speed rotary equipment
• Straight profile targets cylindrical bores, slots, and hard-to-reach internal surfaces

Compatibility

Designed as an OEM-style replacement cartridge roll for use with standard straight mandrels accepting 0.5 inch diameter rolls on die grinders and rotary finishing tools.

Installation Notes

Cartridge rolls are installed by trade machinists, fabricators, and maintenance technicians using a compatible mandrel secured in a die grinder or rotary tool. Confirm the mandrel diameter and arbor size match the roll bore before mounting. Always verify the tool RPM rating does not exceed the 24,000 RPM maximum stamped on this roll before operation. Inspect the roll for tears or separation before each use and replace if any backing damage is present.