United Abrasives 52420 AO Economical Fiber Disc is a general-purpose abrasive designed for high-speed, aggressive material removal where cost-effectiveness is a key priority. This disc features an AO (Aluminum Oxide) grain, which is the most common and versatile abrasive used for grinding and sanding. The “Economical” designation means it is intended for general-purpose applications that do not require the premium performance or specialized features (like grinding aids) of Zirconium or Ceramic discs. The 120 Grit is an extremely coarse rating, making this disc suitable for the most aggressive tasks, such as initial weld grinding, heavy rust and mill scale removal, and rapid stock removal on various materials.Type: Fiber Disc | Abrasive Material: AO Aluminum Oxide | Diameter (in.): 4-1/2 | Arbor Hole (in.): 7/8 | Grit: 120 | Max RPM: 13300 | Application: Blending, Grinding | Box of: 100 | __quantity: 100Features:High-quality aluminum oxide grain, open coatEconomical choice for general grindingFast material removalAvailable in Bulk or Blue Line PackagingResin over resin construction for a strong bond that is resistant to heat and moistureVulcanized fiber backing for heavy-duty sandingBlue Line Packaging: Used for retail packaging in convenient, smaller quantities. UPC bar codedCustom Discs: All custom fiber discs are non-cancellable and non-returnableLooking for more information about United Abrasives Fiber Discs? Click hereto view theCatalogFor help choosing the correct United Abrasives Fiber Disc for your application, please call (800) 608-5210 or [email protected]
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