CGW 41715 4-1/2" X 5/8"-11 Type 27 80-Grit ZPC Zirconia Flap Disc

The CGW 41715 Zirconia Flap Disc is designed for aggressive material removal on sheet metal and other steel surfaces. With a 4-1/2" diameter and a 5/8"-11 arbor, this Type 27 flap disc provides a depressed center configuration suitable for contouring and grinding on flat or moderately curved workpieces. The zirconia grain is paired with a poly/cotton backing, offering a balance of durability and finish strength that helps maintain disc integrity under high grinding pressures while producing a smoother finish than some traditional alumina discs. The 80-grit specification places this disc in a general-purpose range for material thinning and deburring tasks on steel, aligning with common shop-floor applications where rapid stock removal is needed without sacrificing finish quality.

The construction emphasizes stability under heavy RPMs. Rated for up to 13300 RPM, the disc is intended for high-speed grinding applications typical of metal fabrication and maintenance tasks. The zirconia grains are bonded to the backing to resist loading and extend useful life in continuous grinding operations, which is particularly important when working on harder or work-hardened steel. Practical use involves anchoring the disc to a compatible grinder with a 5/8"-11 arbor and following proper safety guidelines for flap discs, including securing workpieces and wearing appropriate PPE.

In terms of compatibility and packaging, this product is listed as a 4.5" diameter Type 27 flap disc with an 80-grit zirconia blend, intended for steel applications. Each disc is packaged individually, with a box quantity of 10 for convenient stocking. When selecting replacement discs, ensure your grinder accepts a 5/8"-11 arbor and that the RPM range matches the grinder’s capabilities to prevent wheel damage or personal injury.

Features:

• Zirconia grain with poly/cotton backing for durability and finish strength
• Suitable for steel applications
• Type 27 flap disc profile
• 4-1/2" diameter with 5/8-11" arbor
• 80-grit for balanced material removal and finish
• Maximum RPM: 13300
• Pack: 10 discs per box