3M 7100310797 Fiber Disc 36 Grit 9-1/8 in Ceramic

Product Description

The 3M 7100310797 is a precision shaped ceramic fiber disc designed for aggressive material removal on metal, weld seams, and hard-to-grind surfaces. Measuring 9-1/8 inches in diameter with a 7/8-inch arbor hole, it mounts directly to compatible angle grinders and disc grinders. The 36-grit ceramic abrasive grain is engineered to fracture and self-sharpen during use, maintaining a consistent cut rate over the life of the disc. A resinoid bond holds the grain to a fiber backing, providing durability under the heat and pressure typical of heavy grinding work. Maximum operating speed is 6,600 RPM. This disc is sold individually per package.

This fiber disc is suited for metal fabrication, weld grinding, and surface conditioning in both shop and field environments. The 36-grit coated abrasive cuts aggressively on mild steel, stainless steel, and cast iron. It is commonly used by welders, pipefitters, ironworkers, and maintenance techs who need fast stock removal on large flat or slightly contoured surfaces. The purple precision shaped ceramic grain in the 1182C series is intended for applications where consistent performance across the full disc life is a priority.

Key Features

• Precision shaped ceramic grain self-sharpens during use for sustained cut rate
• 36 grit provides aggressive stock removal on metal and welds
• 9-1/8-inch diameter covers large surface area per pass
• 7/8-inch arbor hole fits standard angle grinder arbors
• Resinoid bond and fiber backing withstand high heat and grinding pressure
• Rated to 6,600 RPM maximum operating speed

Compatibility

Designed as an OEM-style replacement fiber disc for use with standard angle grinders and disc grinders accepting a 9-1/8-inch disc with a 7/8-inch arbor hole attachment.

Installation Notes

Installation is typically performed by the equipment operator or a qualified maintenance technician. Always power down and disconnect the grinder before mounting or removing the disc. Verify the grinder spindle speed does not exceed the 6,600 RPM disc rating before use. Inspect the disc for cracks or damage before each use and discard any disc that shows signs of deterioration.