Norton 78072779104 Abrasive Belt 320 Grit 3/4x20-1/2 in

Product Description

The NORTON 78072779104 is a coated abrasive belt designed for dry precision finishing applications on a wide range of materials. Measuring 3/4 inches wide by 20-1/2 inches long, this belt uses aluminum oxide as its abrasive material and carries a 320 grit rating, placing it in the extra fine grade category. The closed coat density and X-weight cloth backing deliver consistent cut and durability during finish sanding passes. It is suited for use on portable and stationary belt sanders where fine surface prep is required before coating, sealing, or final inspection.

This belt is intended for dry operation and fits belt sanders that accept a 3/4 inch by 20-1/2 inch belt. It is commonly used in metal fabrication, woodworking, and general finishing work where a smooth, refined surface is the goal. The R228 series designation identifies this as a standard production-grade belt appropriate for shop and field use. Trades including finish carpenters, metal workers, and general maintenance professionals typically keep this grit size on hand for final-stage material removal and surface conditioning.

Key Features

• 320 grit extra fine aluminum oxide abrasive for controlled finish sanding
• Closed coat construction maximizes abrasive coverage for consistent scratch pattern
• X-weight cloth backing provides flexibility and durability under load
• Dry operation only — not rated for wet sanding applications
• Series R228 production-grade belt for shop and field environments

Compatibility

Designed as a replacement-style abrasive belt for belt sanders and finishing machines that accept a 3/4 inch by 20-1/2 inch belt size.

Installation Notes

Install on a belt sander with the power disconnected and the machine unplugged before changing belts. Verify belt tracking and tension per the sander manufacturer instructions before resuming operation. This belt is rated for dry use only — do not use with water, cutting fluid, or other liquids. Inspect the belt for tears or separation at the splice before each use and replace if damaged.