Norton 66261121288 Flap Disc 60 Grit Type 29 4.5 in

Product Description

The NORTON 66261121288 is a Type 29 zirconia alumina flap disc designed for aggressive material removal on metal surfaces. It carries a 60-grit medium-grade abrasive mounted on a fiberglass-backed disc measuring 4.5 inches in diameter with a 5/8-11 threaded arbor hole for direct attachment to standard angle grinders. The overlapping abrasive flaps conform slightly to the work surface, delivering consistent stock removal and a smooth finish in a single pass. At a maximum rated speed of 13,000 RPM, this disc is built for demanding production grinding and finishing work performed by fabricators, welders, and metal trade professionals.

This flap disc is suited for use on steels, stainless steel, and titanium in both fabrication shop and field settings. The Type 29 conical flap geometry positions the disc at a working angle that increases contact pressure and grinding aggressiveness compared to a flat Type 27 profile, making it well-suited for weld blending, surface conditioning, and edge work on structural and sheet metal components. It attaches via a threaded arbor hole, requiring no separate backing pad or hardware for grinder-mounted operation.

Key Features

• 60-grit medium-grade zirconia alumina abrasive for aggressive stock removal with controlled surface finish
• Type 29 conical profile increases grinding angle contact for weld blending and heavy material removal
• Fiberglass backing plate with X-weight backing provides rigidity and support during high-load grinding
• 5/8-11 threaded arbor hole mounts directly to standard angle grinder spindles without adapters
• Rated to 13,000 RPM for compatibility with most 4.5-inch angle grinders
• Compatible material applications include steels, stainless steel, and titanium

Compatibility

Rated for use on steels, stainless steel, and titanium. Fits standard angle grinders with a 5/8-11 spindle thread and a 4.5-inch disc capacity rated at or below 13,000 RPM.

Installation Notes

Installation is performed by threading the disc directly onto a compatible angle grinder spindle and tightening by hand until secure. Verify the grinder's no-load RPM rating does not exceed the disc's 13,000 RPM maximum before operation. Always install and replace abrasive discs with the grinder unplugged or the battery removed. Operators should wear appropriate face, eye, and hand protection in accordance with ANSI B11 and tool manufacturer guidelines.