CGW 42305 4-1/2" X 7/8" Type 27 80-Grit Z3 Zirconia Flap Disc

The CGW 42305 4-1/2" x 7/8" Type 27 80-Grit Z3 Zirconia Flap Disc is designed for aggressive material removal on steel surfaces. The disc uses premium Zirconia Alumina grain bonded to a poly/cotton backing, which combines durability with a smoother finish and supports higher stock removal rates. Zirconia concentration is chosen to enhance cutting efficiency, particularly in heavy-duty grinding scenarios, while the active grinding aid assists cool cutting under light pressure.

Constructed to balance aggressive grinding with controlled finish, this Type 27 flap disc is suitable for applications that demand rapid material removal without sacrificing control. The 4-1/2 inch diameter and 7/8 inch arbor/shank size fit compatible standard grinders, and the 80-grit designation indicates a coarse texture appropriate for deburring, shaping, and roughing tasks on steel components.

Considerations for use include ensuring appropriate wheel speed; the rated RPM is 13,300, which should be matched to the grinder’s capabilities and safety guidelines. Each package contains ten units, facilitating ready inventory for shops performing frequent metal finishing work. Proper inspection and wheel mounting practices should be followed to maintain safety and performance. The disc’s Type 27 angle is optimized for off-angle contact on flat or contoured surfaces, enabling effective access to weld beads and flat steel work where stock removal is prioritized over fine finishing.

Features:

• Premium Zirconia Alumina grain on poly/cotton backing for durability and finish
• High stock removal rate in steel applications
• Active grinding aid provides cool cutting with light pressure
• Type 27 flap disc designed for aggressive use
• 4-1/2" diameter with 7/8" arbor, 80-grit