Norton 78072728821 Abrasive Belt 120 Grit 4x36 in

Product Description

The NORTON 78072728821 is a coated abrasive belt designed for aggressive stock removal and surface finishing on metal, wood, and composite materials. Built on a heavy-duty X-weight polyester cloth backing with a closed-coat zirconia alumina grain at 120 grit, this belt delivers consistent cut rates and long service life under both wet and dry operating conditions. It belongs to the R823P series, engineered for demanding applications where durability and heat resistance are priorities. Measuring 4 inches wide by 36 inches long, it fits standard stationary and portable belt sanders used in fabrication and grinding operations.

This belt is suited for use in industrial, commercial, and trade shop environments. It excels in metal fabrication, weld blending, pipe and structural steel finishing, and general surface preparation. The zirconia alumina abrasive self-sharpens during use, maintaining an aggressive cut over the life of the belt. Both wet and dry operation are supported, making it adaptable to shops that use coolant or cutting fluid during grinding. Typical users include metal fabricators, millwrights, maintenance technicians, and pipe fitters.

Key Features

• 120 grit zirconia alumina grain for controlled stock removal and fine surface finishing
• Closed-coat construction maximizes grain density for faster, more uniform cutting action
• X-weight polyester cloth backing resists tearing and flexing under high-tension belt sander loads
• Rated for both wet and dry operation, compatible with coolant-assisted grinding
• R823P series design balances cut rate with consistent finish quality across the belt life

Compatibility

Designed as a standard replacement coated abrasive belt for stationary and portable belt sanders that accept 4 inch by 36 inch belts.

Installation Notes

Installation is performed by qualified shop personnel or maintenance technicians. Always power down and lockout/tagout the belt sander before changing belts. Confirm belt tracking direction matches the arrow marked on the inside of the belt before tensioning. Inspect the platen, idler, and drive rollers for wear or debris before mounting a new belt.