3M 7010309062 Straight Cartridge Roll 320 Grit 3/16 in

Product Description

The 3M 7010309062 is a straight cartridge roll designed for precision grinding and finishing in tight or contoured areas. Built with aluminum oxide abrasive on a cloth backing, this roll delivers consistent cutting action at very fine 320 grit. The 3/16 inch diameter profile fits mandrel-driven rotary tools and die grinders commonly used by machinists, fabricators, and maintenance technicians. With a maximum operating speed of 24,000 RPM, it suits high-speed finishing passes where surface quality matters. This cartridge roll is sold individually but requires a minimum order of 100 units per purchase.

This cartridge roll is suited for deburring, blending, and surface finishing on metal, wood, and composite materials. The very fine 320 grit produces smooth finishes appropriate for pre-paint prep, weld blending, and final-stage material removal. The straight cartridge profile works in portable die grinders, pencil grinders, and bench-mounted spindle tools. It is commonly specified in production environments, tool-and-die shops, and MRO maintenance applications where consistent surface finish is required across repeated operations.

Key Features

• 320 grit aluminum oxide abrasive for very fine surface finishing
• Cloth backing provides durability and flexibility during contour grinding
• 3/16 inch diameter fits standard mandrels for die grinders and rotary tools
• Rated to 24,000 RPM for use with high-speed pneumatic and electric grinders
• Straight cartridge form maintains consistent contact on flat and slightly curved surfaces

Compatibility

Designed as an OEM-style replacement or standard consumable for use with mandrel-driven rotary grinding tools that accept 3/16 inch diameter straight cartridge rolls.

Installation Notes

Installation is performed by machinists, fabricators, or maintenance technicians familiar with rotary abrasive tooling. Ensure the die grinder or rotary tool is powered off and air supply is disconnected before mounting the cartridge roll onto the mandrel. Do not exceed the rated maximum speed of 24,000 RPM. Inspect the roll for damage before use and follow applicable ANSI abrasive safety standards for grinding wheel operation.