3M 7100308532 Fiber Disc 36 Grit 5 in Ceramic

Product Description

The 3M 7100308532 is a 5-inch fiber-backed abrasive disc designed for aggressive material removal in heavy grinding and blending applications. It uses a precision-shaped premium ceramic alumina grain with a resinoid bond on a fiber backing, delivering consistent cut rates and long disc life. Rated to 12,000 RPM, this extra-coarse 36-grit disc is suited for weld removal, edge grinding, and surface conditioning on steel and other hard metals. It mounts via a standard 7/8-inch arbor hole for use on angle grinders and disc sanders. Each unit is sold individually with a minimum order quantity of 25.

This disc fits production and maintenance grinding scenarios in fabrication shops, structural steel work, and industrial MRO environments. It is installed and used by metal fabricators, welders, pipefitters, and maintenance technicians who need a fast-cutting disc for stock removal and surface prep. The purple-colored 1187C series designation helps distinguish this precision-shaped ceramic product from conventional aluminum oxide discs on the job site.

Key Features

• Premium ceramic alumina grain for high cut rate and extended disc life
• Precision-shaped abrasive construction provides consistent, aggressive material removal
• 36 grit extra-coarse grade suited for weld grinding and heavy stock removal
• Resinoid bond on fiber backing for durability under high-pressure grinding
• 12,000 RPM maximum speed rating for use with standard angle grinders
• Standard 7/8-inch arbor hole fits common disc grinder arbors

Compatibility

Designed as a standard arbor-hole fiber disc for use with angle grinders and disc sanders that accept 5-inch fiber discs with a 7/8-inch arbor hole and a maximum spindle speed at or above 12,000 RPM.

Installation Notes

Fiber discs are installed and changed by metalworking tradespeople and industrial maintenance technicians. Always power down and disconnect the grinder before changing discs. Verify that the tool spindle speed does not exceed the 12,000 RPM rating marked on the disc. Inspect the disc for cracks or damage before each use and never operate a damaged disc.