3M 7100100986 Fiber Disc 80 Grit Ceramic 3 Inches

Product Description

The 3M 7100100986 is a 3-inch ceramic fiber disc designed for aggressive material removal on metal, weld seams, and surface preparation applications. Part of the 782C series, it features an 80-grit medium-grade ceramic abrasive bonded with a resinoid bond to a fiber backing. The TR Quick Change attachment type allows fast disc swaps without tools, reducing downtime during extended grinding tasks. Rated to 20,000 RPM, this disc handles high-speed angle grinder work and is used by fabricators, pipefitters, and maintenance technicians wherever fast, consistent stock removal is required.

This disc is suited for grinding and blending on steel, stainless steel, and other ferrous and non-ferrous metals in both shop and field environments. The coated ceramic abrasive maintains a sharp cutting edge longer than aluminum oxide alternatives, making it a practical choice for repetitive weld removal, deburring, and surface conditioning. Its compact 3-inch diameter fits TR Quick Change backing pads commonly found on die grinders and right-angle grinders used in tight access areas and pipe work.

Key Features

• 3-inch diameter ceramic coated abrasive disc for aggressive stock removal
• 80 grit medium grade ceramic mineral for extended cut life
• TR Quick Change attachment for tool-free disc changes
• Resinoid bond holds abrasive firmly under high-speed grinding loads
• Fiber backing provides rigidity and durability during heavy grinding
• 20,000 RPM maximum speed rating for use with standard die grinders

Compatibility

Designed for use with TR Quick Change backing pads on die grinders and right-angle grinders that accept 3-inch TR-style discs. Confirm backing pad compatibility and maximum RPM rating before use.

Installation Notes

Installation is performed by pressing the disc onto a compatible TR Quick Change backing pad until it locks into place. Always verify the grinder and backing pad RPM rating meets or exceeds 20,000 RPM before mounting. Wear appropriate PPE including a face shield and gloves during grinding operations. Inspect the disc for damage before each use and discard any disc that shows cracking, tearing, or delamination.