3M 7100080020 Straight Cartridge Roll 240 Grit 1/4 in

Product Description

The 3M 7100080020 is a straight cartridge roll abrasive designed for precision grinding, blending, and finishing in tight or contoured areas. Built with an aluminum oxide abrasive on a cloth backing, it delivers consistent material removal at a very fine 240 grit rating. The 0.25 inch diameter profile fits mandrel-mounted rotary tools and die grinders, making it a go-to choice for machinists, fabricators, and maintenance technicians who need controlled surface finishing on metal, wood, or composite materials. The cloth backing provides flexibility and durability through extended use cycles.

This cartridge roll is suited for detail work in recessed slots, bores, and irregular contours where flat abrasive media cannot reach. It performs well in both production and maintenance environments, including aerospace component finishing, weld blending, and precision part deburring. The very fine grit makes it appropriate for final-stage surface prep rather than heavy stock removal. Technicians typically mount it on a compatible mandrel in a die grinder or flexible shaft tool before use.

Key Features

• 240 grit very fine grade for controlled, finish-stage material removal
• Aluminum oxide abrasive provides consistent cut and long service life on ferrous and non-ferrous metals
• Cloth backing adds flexibility and tear resistance in contoured or recessed work areas
• 0.25 inch diameter fits standard small-diameter mandrels for die grinders and rotary tools
• Rated to 24000 RPM for use with high-speed rotary equipment

Compatibility

Designed for use with standard mandrel-mounted rotary and die grinder setups that accept 0.25 inch diameter straight cartridge rolls.

Installation Notes

Installation is performed by machinists, fabricators, or maintenance technicians using a compatible mandrel and rotary tool. Power down and disconnect the tool from its power source before mounting or removing the cartridge roll. Do not exceed the rated 24000 RPM maximum speed. Inspect the roll for damage before each use and replace if the abrasive or backing shows signs of deterioration.