Walter Surface Technologies 09A204 Flap Disc 40 Grit

Product Description

The WALTER SURFACE TECHNOLOGIES 09A204 is a 2-inch mini flap disc engineered for aggressive material removal on metal surfaces. Built with zirconia alumina abrasive, this Type 27 coated disc delivers a flat grinding profile suited for surface blending, weld grinding, and stock removal. The nylon backing provides flexibility and durability during high-speed operation. Rated to 30,000 RPM, it is designed for use with right-angle die grinders and mini grinders in demanding fabrication and finishing environments. Trades such as metal fabricators, welders, pipefitters, and ironworkers rely on this disc for fast, consistent results on tight or hard-to-reach surfaces.

The 09A204 is intended for use on aluminum, stainless steel, and carbon steel. The Type 27 flat profile makes it well-suited for surface grinding and blending applications where a depressed-center disc would be too aggressive or cumbersome. Its compact 2-inch diameter fits mini angle grinders commonly used in confined spaces, pipe saddles, tube ends, and narrow weld joints in both shop and field settings. The green zirconia alumina grain provides a self-sharpening cutting action that sustains cut rate over the life of the disc.

Key Features

• 40-grit zirconia alumina abrasive for aggressive stock removal and long disc life
• Type 27 flat profile for surface grinding and weld blending
• Mini Type R attachment fits standard mini right-angle grinders
• Nylon backing adds flexibility and resistance to heat and shock
• 30,000 RPM maximum speed rating for high-speed die grinder compatibility
• Suitable for aluminum, stainless steel, and carbon steel applications

Compatibility

Designed for use with mini right-angle grinders accepting Type R attachments. Rated for use on aluminum, stainless steel, and steel substrates.

Installation Notes

This disc is installed and replaced by metalworking tradespeople including welders, fabricators, and pipefitters. Before mounting or removing the disc, ensure the grinder is fully powered off and unplugged or battery removed. Confirm the tool's rated RPM meets or exceeds the disc's 30,000 RPM maximum before use. Follow ANSI B7.1 and the grinder manufacturer's guidelines for proper disc mounting and guard use.