Norton® BlueFire® 66252843214 Depressed Center Wheel, 4-1/2 in Dia x 1/4 in THK, 7/8 in Center Hole, 24 Grit, Zirconia Alumina Abrasive

Depressed center wheels may also be referred to as raised hub wheels or by their shape designation Type 27, 28 or 29, with Type 27 being the most popular. The depressed center design allows the flange/lock nut to recess within the wheel so that it can be used for various grinding and cutting applications. Depressed center wheels are designed to handle the most severe right angle grinding applications from heavy stock removal to rough blending. More recently, depressed center wheels have been designed for cut-off applications when the tool is proper designed with flanges and guards. While large right angle grinders (7 in & 9 in) have been around for many years, small or mini grinders that handle 4 in, 4-1/2 in and 5 in wheels have made this machine, and wheel category, the most popular in power tools.

• A blend of R and D advanced chemistry and shape zirconia alumina abrasive with premium aluminum oxide grain for 2 to 3 times the life of aluminum oxide wheels, up to 20% increase in performance and life over our former zirconia alumina wheels
• Broad utility from light to heavy pressure applications, on a wide range of materials, excellent performance to price ratio for lower total grinding costs
• Reinforced for the most aggressive foundry applications
• Excellent blend of performance and price
• With quick-change hub for tool free wheel changes to increase productivity
• Zirconia alumina/silicon carbide abrasive blend and an exceptionally strong reinforcement structure
• Versatile choice for aggressive, foundry applications
• Less pressure required for first cut