3M 7100077039 Cubitron Ii Roloc Disc 947A 2 Inch 40 Grit

Product Description

The 3M 7100077039 is a 2-inch diameter, 40-grit abrasive disc built on the Cubitron II and Roloc platform for use in metalworking and fabrication applications. It features 3M Precision-Shaped Grain, which delivers sharp, consistent cutting action while running cooler than conventional abrasive grain. A poly-cotton X-weight backing provides tensile strength and resists fraying or tattering under heavy edge-work conditions. The Roloc attachment system allows fast disc changes without threading or tools. This disc is suited for grinding, blending, and finishing operations at speeds up to 25,000 rpm.

This disc is designed for edge work and general surface preparation on metal. The evenly spaced grain pattern includes gaps that allow swarf and debris to escape, reducing loading and extending the usable life of the disc. It fits applications where durability at the disc edge is critical, such as deburring cut edges, weld prep, and finishing tight radii on structural components. Licensed metalworkers, fabricators, and maintenance technicians working with angle grinders or die grinders are the primary installers.

Key Features

• 3M Precision-Shaped Grain provides sharp, cool, consistent cutting without glazing
• Open grain spacing reduces loading and extends disc life in metal removal applications
• Poly-cotton X-weight backing resists fraying and tattering during edge-work use
• Roloc attachment allows tool-free disc swaps in seconds
• Rated to 25,000 rpm for compatibility with standard die grinders and angle grinders

Compatibility

Designed for use with Roloc-compatible die grinders and angle grinders accepting 2-inch Roloc abrasive discs.

Installation Notes

Installation is performed by metalworkers and fabricators using Roloc-compatible pneumatic or electric grinders. Before mounting, confirm the tool spindle speed does not exceed the disc rating of 25,000 rpm. Inspect the disc for damage before each use and replace immediately if backing is frayed or torn. Always wear appropriate PPE including face shield and gloves when operating grinding equipment.

Technical Specifications

• Disc Diameter: 2 inches
• Grit: 40
• Maximum Speed: 25,000 rpm
• Backing Material: Poly-cotton X-weight
• Attachment Type: Roloc
• Package Weight: 2.767 pounds
• Package Length: 9.71 inches
• Package Width: 9.13 inches
• Package Height: 5.08 inches
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100077039