3M 7100101684 Straight Cartridge Roll 320 Grit 5/16 in

Product Description

The 3M 7100101684 is a straight cartridge roll abrasive designed for precision deburring, blending, and finishing in tight bores, slots, and contoured surfaces. Built on a cloth backing with aluminum oxide abrasive grain, it delivers consistent 320 grit (Very Fine grade) cut action suited to ferrous and non-ferrous metals. At 5/16 inch diameter, it fits mandrel-driven rotary tools and die grinders commonly used by machinists, fabricators, and finishing technicians. The cloth backing provides flexibility to conform to irregular surfaces while maintaining abrasive contact throughout the roll.

This cartridge roll is intended for use on metal workpieces where a controlled, fine-grit finish is required. Typical applications include smoothing weld seams, cleaning up drilled or reamed bores, and surface preparation before coating or inspection. It is well suited to production environments and bench work where consistent surface finish quality across multiple passes is the priority. A maximum operating speed of 24,000 RPM makes it compatible with high-speed die grinders and inline rotary tools standard in metal fabrication and maintenance shops.

Key Features

• 320 grit aluminum oxide grain for Very Fine surface finishing and light material removal
• Cloth backing provides flexibility for contoured and bore applications
• 5/16 inch diameter fits standard mandrel-driven die grinders and rotary tools
• Rated to 24,000 RPM maximum for use with high-speed pneumatic and electric tools
• Straight cartridge roll geometry maintains consistent abrasive contact in cylindrical and slotted surfaces

Compatibility

Designed as an OEM-style replacement cartridge roll for use with standard straight-shank mandrels accepting 5/16 inch diameter cartridge rolls in die grinders and rotary finishing tools.

Installation Notes

This abrasive roll is installed by a machinist or metal finishing technician onto a compatible straight mandrel. Ensure the tool is fully powered off and air supply is disconnected before mounting or removing the roll. Do not exceed the 24,000 RPM maximum operating speed rating. Inspect the roll and mandrel for wear or damage before each use, and wear appropriate eye and face protection per ANSI Z87.1 standards when operating abrasive tools.