Norton 666233-55578 Ceramic Alumina Fiber Disc 24 Grit

Product Description

The NORTON 666233-55578 is a ceramic alumina fiber disc designed for aggressive material removal on metal, weld seams, and hard surfaces. Sold in packs of 25, these discs measure 7 inches in diameter with a 7/8-inch arbor hole and carry a coarse 24 grit rating. The ceramic alumina abrasive grain delivers consistent cut rates and extended disc life compared to standard aluminum oxide. These discs are suited for use with angle grinders and are commonly installed by metal fabricators, welders, HVAC sheet metal technicians, and industrial maintenance trades.

This fiber disc is appropriate for grinding and blending operations on carbon steel, stainless steel, and other hard metals. The 24 grit designation makes it best suited for heavy stock removal, weld grinding, and surface preparation ahead of finishing work. The 7-inch format fits standard right-angle grinders equipped with a backing pad. This disc is referenced under the Merit FX965 product family and carries the NORTON part number 666233-55578.

Key Features

• Ceramic alumina grain for high cut rate and long disc life
• 24 grit for aggressive stock removal and weld grinding
• 7-inch diameter with 7/8-inch arbor hole fits standard angle grinders with backing pad
• Sold in a 25-count pack, unit of measure is each disc
• Referenced under Merit FX965 product family

Compatibility

Designed for use with standard right-angle grinders and angle grinder backing pads that accept a 7-inch fiber disc with a 7/8-inch arbor hole. No specific machine or model compatibility data was provided beyond these dimensional requirements.

Installation Notes

Fiber discs require a compatible rigid or semi-rigid backing pad mounted to an angle grinder rated for the disc diameter and operating speed. Always verify the grinder RPM rating meets or exceeds the disc maximum RPM before mounting. Power down and unplug or lock out the grinder before changing discs. Wear appropriate PPE including a face shield and gloves during grinding operations.

Technical Specifications

• Abrasive Material: Ceramic Alumina
• Disc Diameter: 7 inches
• Arbor Size: 7/8 inch
• Grit: 24
• Pack Quantity: 25 discs
• Unit of Measure: Each
• Minimum Order Quantity: 25

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 666233-55578