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The 3M 7100070423 is a hard backup pad designed to support 3M Roloc 3-inch diameter abrasive discs during grinding, blending, and finishing operations. The pad features a 1/4-20 internal thread that allows direct mounting to tools with a 1/4-20 external threaded shaft. It is also compatible with a Roloc shank adapter for use in collet chuck tools. Weighing just 0.22 pounds, this compact pad suits handheld angle grinders, die grinders, and drill-driven applications common in metal fabrication, automotive body work, and industrial maintenance environments. Licensed tradespeople and skilled technicians rely on it for consistent disc support and repeatable surface results.
This backup pad is used wherever 3M Roloc 3-inch abrasive discs are the specified consumable. Typical applications include weld blending, rust and paint removal, deburring, and surface preparation on metal substrates. It suits both shop and field environments and is appropriate for professional metalworking, auto body, and general industrial maintenance tasks. The hard pad construction provides firm backing, which is preferred when working on flat or slightly contoured surfaces that require aggressive material removal or precise finishing.
Designed for use with 3M Roloc 3-inch diameter abrasive discs and mountable on tools with 1/4-20 external threaded shafts or collet chuck tools equipped with a Roloc shank adapter.
Installation is performed by metalworking professionals and industrial maintenance technicians. Before mounting or changing the pad, disconnect the tool from its power source or remove the air supply line. Thread the pad securely onto the tool shaft or shank adapter by hand before operating. Inspect the pad and abrasive disc for damage before each use and replace if cracking, deformation, or thread wear is observed.
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