CGW 30145 4-1/2" X 5/8"-11 Type 27 80-Grit Z3 Zirconia Flap Disc

CGW 30145 4-1/2" x 5/8"-11 Type 27 80-Grit Z3 Zirconia Flap Disc combines durable zirconia grain with a poly/cotton backing to deliver aggressive material removal on steel surfaces. The Type 27 configuration and 80-grit specification are designed for flatter grinding angles and a finish suitable for dimensioning, deburring, or weld grinding tasks on metal workpieces that require efficient stock removal. The zirconia-alumina blend enhances abrasion efficiency, while the backing material contributes to long-term durability and a smoother finish during extended use. An active grinding aid is included to help maintain cooler cutting action under light pressure, which can reduce heat buildup and prolong tool life under load.

This flap disc is designed for heavy-duty, high-demand use where rapid material removal is prioritized. The combination of abrasive grain and binder is chosen to balance aggressive cutting with a controllable finish, making it suitable for applications such as rough grinding, deburring, and preparing weld seams on mild steel and similar metals. When selecting this disc, operators should apply steady, moderate pressure and avoid excessive force to maximize life and maintain effective stock removal. As with all 4-1/2" diameter discs with a 5/8"-11 arbor, ensure compatible tool attachments and correct mounting to prevent runout or vibration that could affect performance.

Compatibility and packaging details indicate a standard 4-1/2" flap disc with a 5/8"-11 arbor, commonly used on right-angle grinders. The package quantity is listed as each with a box quantity of 10, which is useful for stocking and inventory planning in workshop or job-site settings. Regular inspection for wear and disc integrity is recommended, replacing the disc when backing shows signs of delamination or when grit is worn through for consistent grinding results.

Features:

• Premium Zirconia Alumina grain on poly/cotton backing
• High stock removal with cool cutting action
• Recommended for aggressive use and heavy-duty applications
• Active grinding aid enables cool cutting with light pressure
• 4-1/2" diameter, 5/8-11" arbor, Type 27
• 80 grit for balanced material removal and finish