3M 7100101038 Roloc Fibre Disc 782C 4 Inch 60 Grit

Product Description

The 3M 7100101038 is a coated abrasive fibre disc in the Roloc 782C series, designed for ultra-rapid material removal on carbon steel. Built with 3M Precision Shaped Grain technology, it delivers higher cut rates and longer service life compared to conventional fibre discs. The stiff fibre backing and strong resin bond resist tearing under heavy load. At 4 inches in diameter and rated to 30000 RPM, this disc handles aggressive grinding tasks including weld removal, beveling, edge chamfering, and surface blending. It is installed and removed tool-free via the Roloc threaded attachment system, making disc changes fast on the job.

This disc is suited for metalworking professionals working on carbon steel fabrication, structural steel, and weld finishing. Typical applications include grinding weld beads flush, blending surface transitions, and refining edges prior to inspection or coating. The 60-grit cut level makes it appropriate for stock removal and initial blending stages rather than fine finishing. It is commonly used in fabrication shops, pipe yards, and maintenance environments where throughput and disc life directly affect labor cost.

Key Features

• 3M Precision Shaped Grain delivers higher cut rates than conventional abrasive minerals
• Rated to 30000 RPM for use with standard Roloc right-angle grinders and die grinders
• Tool-free Roloc threaded attachment secures the disc quickly and releases without tools
• Stiff fibre backing and strong resin bond provide tear-resistance under heavy grinding loads
• 60-grit configuration optimized for weld removal, beveling, and blending on carbon steel
• Long-lasting abrasive construction reduces disc consumption and overall cost per part

Compatibility

Designed for use with Roloc-compatible right-angle grinders and die grinders that accept the threaded Roloc disc attachment system. Intended for use on carbon steel substrates.

Installation Notes

This disc is installed and removed by hand using the Roloc threaded attachment — no tools required. Ensure the grinder is powered off and unplugged or air supply is shut off before changing discs. Verify the tool's maximum RPM rating meets or exceeds 30000 RPM before mounting. Inspect the disc for damage before each use and never use a disc that shows cracks, tears, or delamination.

Technical Specifications

• Diameter: 4 inches
• Grit: 60
• Maximum Speed: 30000 RPM
• Disc Type: Coated Fibre Disc
• Attachment Type: Roloc Threaded
• Abrasive Mineral: 3M Precision Shaped Grain
• Weight: 3.272 pounds
• Package Length: 13.59 inches
• Package Width: 11.88 inches
• Package Height: 6.2 inches
• Unit of Measure: Each
• UPC: 076308896725

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100101038