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The 3M 7100044784 is a 5-inch disc backing pad designed to support abrasive discs during grinding, sanding, and finishing operations. It mounts to rotary tools and angle grinders, providing a stable, consistent backing surface that helps abrasive discs track true and wear evenly. Rated to a maximum of 12,000 RPM, it is suited for both shop and field use. Weighing 0.5 pounds, the pad is lightweight enough for extended overhead or side-wall work without adding significant tool fatigue. Installers and fabricators in HVAC, plumbing, and mechanical trades reach for this type of pad when cutting or finishing metal pipe, sheet metal, and structural components.
This backing pad is used in applications requiring controlled material removal or surface preparation on metal, composite, or similar substrates. It is commonly paired with hook-and-loop or pressure-sensitive adhesive abrasive discs sized to the 5-inch diameter. Typical install scenarios include deburring pipe ends, smoothing weld beads, and prepping metal surfaces before sealing or coating. The pad is packaged individually and sold as a single unit.
Designed as a replacement or spare backing pad for rotary tools and angle grinders that accept 5-inch abrasive discs rated up to 12,000 RPM.
A qualified technician or machinist should verify that the tool spindle speed does not exceed the 12,000 RPM rating of the pad before mounting. Power down and disconnect the tool from its power source before attaching or removing the backing pad. Follow the tool manufacturer's instructions for securing the pad to the spindle, and inspect the pad for cracks or wear before each use. Discard and replace the pad if backing material shows signs of deformation or separation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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