3M 7100309793 Fiber Disc 36 Grit 5 in Ceramic

Product Description

The 3M 7100309793 is a 5-inch precision shaped ceramic fiber disc designed for aggressive material removal on metal, weld seams, and hard-to-grind surfaces. It uses resinoid-bonded, coated abrasive construction on a fiber backing, which provides the rigidity needed for flat and contour grinding. The 36-grit ceramic abrasive cuts fast and resists loading, making it well suited for heavy stock removal tasks. Rated to 12,000 RPM, this disc is built for use on angle grinders and disc sanders equipped with a rubber backup pad. It is sold individually with a minimum order quantity of 25 units.

This disc is commonly used in metal fabrication, weld preparation, and surface conditioning applications. The 7/8-inch arbor hole attaches directly to standard backup pads without additional hardware. Typical users include welders, pipefitters, sheet metal workers, and general fabricators working on carbon steel, stainless steel, and cast iron. The purple precision shaped ceramic grain extends disc life compared to conventional aluminum oxide fiber discs, reducing changeover time in production environments.

Key Features

• Precision shaped ceramic abrasive grain for fast cut rate and extended disc life
• 36 grit for aggressive stock removal and weld seam blending
• Fiber backing provides rigidity for flat grinding and edge work
• Resinoid bond resists heat buildup during prolonged grinding
• 12,000 RPM maximum speed rating for compatibility with standard angle grinders
• 7/8-inch arbor hole fits standard rubber backup pads without adapters

Compatibility

Designed for use with 5-inch rubber backup pads and angle grinders or disc sanders that accept a 7/8-inch arbor hole attachment. Part of the 3M 1182C series.

Installation Notes

Installation is performed by qualified grinding equipment operators following applicable ANSI B7 and OSHA 1910.215 standards for abrasive wheel use. Always power down and disconnect the grinder before mounting or removing the disc. Inspect the disc for cracks or damage before each use and never exceed the 12,000 RPM maximum speed rating. Use an appropriate backup pad rated for the disc diameter and ensure the pad and disc are properly seated before operation.