3M 7000044904 Ceramic Fiber Disc 80 Grit 3 in

Product Description

The 3M 7000044904 is a 3-inch ceramic fiber disc designed for aggressive material removal on metal, weld seams, and surface preparation work. Built on a resinoid bond with a fiber backing, this disc runs at up to 20,000 RPM and attaches via the TR Quick Change system, eliminating the need for a separate retainer nut. At 80 grit, it falls in the medium grade range, making it well-suited for blending, deburring, and light stock removal. The ceramic abrasive grain self-sharpens under pressure, extending disc life compared to aluminum oxide alternatives. This disc is sold individually and is part of the 982C series.

This disc is used in metal fabrication, maintenance, and repair applications where a fast-change abrasive solution is needed on angle grinders or die grinders equipped with a TR-style hub. Common tasks include weld blending, rust removal, edge breaking, and surface conditioning on steel and stainless steel. The compact 3-inch diameter suits tight-access areas and smaller grinders. It is a standard choice for field service technicians, pipefitters, welders, and maintenance mechanics working in industrial and commercial environments.

Key Features

• Ceramic abrasive grain self-sharpens for extended disc life and consistent cut rate
• TR Quick Change attachment for fast, tool-free disc swaps
• 20,000 RPM maximum rated speed for use on high-speed grinders
• Resinoid bond construction holds grain firmly under high grinding pressure
• Fiber backing provides rigidity and support during aggressive stock removal
• 80 grit medium grade balances cut speed with surface finish quality

Compatibility

Designed for use with angle grinders and die grinders equipped with a 3M TR Quick Change hub or compatible TR-style mandrel. Verify that the tool spindle speed does not exceed the 20,000 RPM disc rating before installation.

Installation Notes

Installation requires a TR Quick Change hub mandrel mounted on a compatible grinder. Ensure the grinder is powered off and unplugged before mounting or removing the disc. Confirm the tool free-speed rating does not exceed 20,000 RPM. Always wear appropriate PPE including eye protection and gloves when operating grinding discs.