3M 7000120947 Deburring Disc 6 in Very Fine Aluminum Oxide

Product Description

The 3M 7000120947 is an aluminum oxide deburring disc designed for edge finishing, deburring, and light surface conditioning on metal and other hard materials. The disc measures 6 inches in diameter with a 1/4 inch arbor center hole and is rated for a maximum spindle speed of 4000 RPM. It carries a Very Fine grade abrasive, making it appropriate for final-pass deburring where minimal material removal is needed and a clean edge profile is the priority. This disc is installed and used by machinists, pipefitters, HVAC techs, and maintenance trades working with ferrous and non-ferrous metal components.

This deburring disc fits standard 1/4 inch arbor backing pads and is suited for use with angle grinders, die grinders, or bench-mounted finishing tools in both shop and field environments. Its maroon color designates the Very Fine grade within the unified abrasive color-coding convention. Typical applications include deburring pipe ends, sheet metal edges, machined parts, and welded joints prior to assembly or inspection. The 6 inch diameter provides broad surface coverage on flat or near-flat workpieces.

Key Features

• Aluminum oxide abrasive for consistent cut rate on metal substrates
• Very Fine grade delivers controlled material removal suited for finish deburring
• 4000 RPM maximum rating for compatibility with standard grinder and finishing tool speeds
• 1/4 inch arbor hole fits common backing pad configurations
• 6 inch diameter for broad contact coverage on flat workpieces
• Maroon color denotes Very Fine grade for quick visual identification at the tool station

Compatibility

Designed for use with 6 inch diameter backing pads accepting a 1/4 inch arbor connection on angle grinders, die grinders, and similar rotary finishing tools rated at or above 4000 RPM.

Installation Notes

Install and remove abrasive discs only when the tool is fully powered down and unplugged or locked out per applicable OSHA lockout/tagout procedures. Verify the tool spindle speed rating meets or exceeds the disc maximum of 4000 RPM before use. Inspect the disc for tears, delamination, or deformation before each use and discard any disc showing damage. Always use the appropriate backing pad for the disc diameter and arbor size to ensure secure seating during operation.