Norton 66254425332 Fiber Disc 4-1/2 in 120 Grit Ceramic

Product Description

The NORTON 66254425332 is a ceramic alumina fiber disc designed for aggressive material removal on metal, welds, and castings. Built for use with angle grinders, this 4-1/2 inch disc uses a resinoid bond to lock 120-grit ceramic alumina abrasive onto a fiber backing. Ceramic alumina grain fractures during use to expose fresh cutting edges, maintaining cut rate longer than standard aluminum oxide. At a fine grade, this disc suits finishing passes and surface blending after heavier stock removal. The arbor hole attachment mounts directly to standard angle grinder backing pads. Licensed trades including metal fabricators, pipefitters, and maintenance mechanics are the primary users.

This disc is suited for ferrous and non-ferrous metalworking applications in both shop and field environments. Typical uses include weld blending, deburring, edge chamfering, and surface conditioning on structural steel, pipe, and sheet metal. The 4-1/2 inch diameter and 7/8 inch arbor hole are standard dimensions compatible with common angle grinder configurations used in fabrication and maintenance work. The orange-colored disc face provides visual identification of the ceramic alumina abrasive line within the F980 series.

Key Features

• Ceramic alumina abrasive grain self-sharpens during use for sustained cut rate
• 120 grit fine grade for surface blending and finishing on metal
• Resinoid bond provides durability under high-pressure grinding
• Fiber backing withstands the flex and heat of angle grinder applications
• 7/8 inch arbor hole fits standard angle grinder backing pads
• Part of the F980 series for consistent performance across the product line

Compatibility

Designed as a replacement fiber disc for angle grinders accepting 4-1/2 inch discs with a 7/8 inch arbor hole attachment.

Installation Notes

Fiber discs are installed and replaced by metalworkers, fabricators, and maintenance mechanics using a compatible backing pad on an angle grinder. Always power down and unplug or de-energize the grinder before mounting or removing a disc. Inspect the disc for cracks or damage before each use and never operate above the maximum RPM rating marked on the disc or grinder. Follow applicable ANSI B7.1 grinding safety standards when using coated abrasive products.