3M 7100055948 Ceramic Flap Disc 7 Inch 80 Grit Type 27

Product Description

The 3M 7100055948 is a 7-inch Type 27 ceramic flap disc designed for aggressive material removal and surface preparation on metal. Built around premium ceramic alumina abrasive on a poly-cotton cloth backing rated Y-weight, the disc maintains a consistent cut rate as the flaps wear, reducing the need for frequent disc changes. The fiberglass backing plate provides rigidity and support under load. Rated at a maximum of 13,300 RPM, this disc is sized for standard 5/8-11 threaded angle grinders used across metal fabrication, welding, and structural steel work. At 80 grit, it falls in the medium grade range, making it effective for weld seam blending and prep work without excessive stock removal.

This flap disc is suited for use on steel and stainless steel in both shop and field environments. The Type 27 flat profile keeps the grinding surface flush to the workpiece, which is preferred for flat surface blending, weld toe removal, and light scale cleanup. Metalworkers, welders, pipefitters, and fabricators will find it applicable across structural fabrication, pipe preparation, and general metal finishing tasks where a medium grit ceramic disc is specified.

Key Features

• Premium ceramic alumina abrasive for fast, consistent stock removal on steel and stainless steel
• Type 27 flat-profile design optimized for flat surface blending and weld removal
• Y-weight poly-cotton cloth backing provides durability and flexibility during use
• Fiberglass backing plate adds rigidity and supports aggressive grinding angles
• 5/8-11 threaded arbor hole fits standard angle grinders
• 80 grit medium grade balances material removal rate with surface finish

Compatibility

Designed for use with angle grinders equipped with a 5/8-11 threaded spindle. Suitable for grinding applications on steel and stainless steel. Part of the 3M 967A series.

Installation Notes

Installation and disc changes must be performed with the grinder disconnected from power. Confirm the grinder spindle speed does not exceed the 13,300 RPM maximum disc rating before use. A licensed or qualified operator should inspect the disc for damage before mounting and ensure the threaded arbor nut is properly tightened using the appropriate spanner wrench. Always use appropriate PPE including a face shield, gloves, and hearing protection when operating angle grinders with abrasive flap discs.