CGW 42164 4" X 5/8" Type 29 60-Grit XL Z3 Zirconia Flap Disc

CGW 42164 is a 4-inch diameter flap disc designed for aggressive material removal on steel. It features a Type 29 recessed profile and a 5/8-11 arbor to fit common right-angle grinders. The disc uses premium zirconia alumina grain on a durable poly/cotton backing, which supports both material removal rates and a reasonable surface finish. Zirconia grain is known for high stock removal, and the backing helps resist tearing under heavy use, contributing to consistent performance across extended grinding sessions. An active grinding aid is included to promote cooler cutting with light pressure, potentially reducing heat-related wear on the workpiece and reducing operator fatigue during demanding grinding tasks.

This disc is intended for aggressive use and heavy-duty applications where rapid metal removal is needed. It is suitable for general-purpose grinding on steel surfaces where a balance of aggressive stock removal and controlled finishing is acceptable. The design and grain choice are aimed at improving efficiency on steel while maintaining a practical approach to pressure and technique. When selecting this disc, consider the material grade and desired finish, bearing in mind that cooler cutting can help manage workpiece thermal effects during extended grinding runs.

Compatibility and use details: The product is specified as a 4" diameter, 5/8"-11 arbor Type 29 flap disc with 60-grit zirconia grain and an RPM rating of 15,300. Pack configuration is ten discs per box, with packaging described as "Each" in the SKU data. Operators should ensure their grinder is compatible with 5/8-11 hubs and observe safety practices for flap-disc grinding. The information provided does not include country of origin, warranty, or additional certifications beyond the stated specifications.

Features:

• Premium Zirconia Alumina grain on a poly/cotton backing for durability and finish
• High stock removal with aggressive use suitable for heavy-duty applications
• Fastest stock removal in the marketplace for steel applications
• Active grinding aid provides cool cutting with light pressure
• Type 29 flap disc design for aggressive grinding
• 4" diameter, 5/8-11" arbor size