CGW 42302 4-1/2" X 7/8" Type 27 40-Grit Z3 Zirconia Flap Disc

CGW 42302 is a 4-1/2 inch diameter flap disc designed for aggressive material removal on steel surfaces. Built with a zirconia alumina grain on a durable poly/cotton backing, this Type 27 disc integrates continuous zirconia grain distribution to deliver high stock removal while maintaining a reasonable finish. The active grinding aid helps reduce heat buildup under light pressure, which can contribute to cooler cutting and more comfortable operation during extended use.

The disc features a 7/8 inch arbor size compatible with standard angle grinder spindles, and a 40-grit surface that balances material removal with surface finish. The combination of zirconia grain and the poly/cotton backing supports durability under heavy-duty, high-abrasion grinding tasks and is suitable for aggressive applications where more aggressive stock removal is required. The Type 27 profile is designed to offer better contact with the workpiece on angled grinding surfaces, aiding efficient material removal on flat and contoured areas.

When selecting this flap disc, consider the material and contact angle to optimize performance: the 40-grit zirconia formulation excels at quick stock removal on ferrous metals, but operators should monitor wheel wear and surface heat, especially on thinner sections. Each package includes ten discs, enabling multiple use cycles or scheduled replacement in demanding maintenance or fabrication environments. Proper mounting and alignment are essential for consistent performance and safety during grinding operations.

Features:

• Premium Zirconia Alumina grain on a poly/cotton backing for durability and finish
• High stock removal with zirconia concentration
• Fastest stock removal in the marketplace for steel applications
• Recommended for aggressive use and heavy-duty applications
• Active grinding aid for cool cutting with light pressure
• Type 27 configuration for efficient angled grinding