Norton 66623353311 Fiber Disc 60 Grit 4-1/2 in Aluminum Oxide

Product Description

The NORTON 66623353311 is a resin-bonded aluminum oxide fiber disc designed for aggressive material removal on metal, weld seams, and hard surfaces. Part of the F240 Series, it features a medium-grade, 60-grit coated abrasive on a fiber backing. The disc measures 4-1/2 inches in diameter with a 7/8-inch arbor hole for compatibility with standard angle grinders. It is rated to a maximum of 11,000 RPM. Weighing just 0.05 pounds per disc, this consumable is intended for frequent replacement in production grinding, blending, and finishing workflows handled by metalworkers, fabricators, and maintenance technicians.

This disc is suited for use on angle grinders in both shop and field environments. Typical applications include weld blending, rust removal, edge deburring, and surface preparation on ferrous and non-ferrous metals. The brown aluminum oxide abrasive provides consistent cut rate across repeated passes. It is sold individually but carries a minimum order quantity of 25 units, making it appropriate for shop stocking and regular replenishment programs.

Key Features

• 60-grit medium-grade aluminum oxide abrasive for efficient stock removal
• Resinoid bond holds abrasive grain firmly through full disc life
• Fiber backing provides rigidity and support during aggressive grinding
• 11,000 RPM maximum speed rating for use with standard angle grinders
• 7/8-inch arbor hole fits common 4-1/2-inch angle grinder spindles
• F240 Series construction for consistent, repeatable performance

Compatibility

Designed for use with standard 4-1/2-inch angle grinders equipped with a 7/8-inch arbor spindle. Verify grinder RPM rating meets or exceeds the disc maximum of 11,000 RPM before use.

Installation Notes

Installation and disc changes must be performed with the grinder unplugged or the power source locked out. Confirm the grinder guard is properly seated before operating. Inspect each disc for cracks or damage before mounting — do not use damaged discs. Operators should follow ANSI B7.1 and applicable OSHA standards for abrasive wheel safety during use.