3M 7100066545 Abrasive Belt 120 Grit 4x36 Aluminum Oxide

Product Description

The 3M 7100066545 is a coated abrasive belt designed for dry grinding, blending, and finishing applications on metal, wood, and composite surfaces. Built on a heavy X-weight cloth backing, it runs the 341D series aluminum oxide grain in a closed-coat pattern at 120 grit, placing it in the fine grade range. The result is a belt that removes material efficiently while leaving a consistent, controlled finish. It measures 4 inches wide and 36 inches long, fitting standard 4 x 36 inch belt sanders and backstand grinders. Installation and belt changes are handled by metalworking and fabrication professionals as well as maintenance technicians.

This belt is suited for dry surface preparation and finishing work on stationary or portable belt sanding equipment. Common applications include weld blending, deburring, and surface conditioning on ferrous and non-ferrous metals, as well as hardwood and engineered wood stock. The 120 grit fine grade makes it a good choice for intermediate to finish-stage passes where a smoother surface profile is needed after coarser stock removal steps. It is sold as a single belt per package.

Key Features

• 120 grit fine grade aluminum oxide grain for controlled material removal and finish refinement
• Closed-coat construction maximizes abrasive coverage for consistent scratch pattern
• Heavy X-weight cloth backing resists tearing and flexing under tension on belt sanders
• 341D series coated abrasive designed for dry operation only
• 4 x 36 inch size fits widely available stationary and portable belt sanding equipment
• Single-belt packaging allows procurement in exact quantities needed

Compatibility

Designed as an OEM-style replacement or standard consumable for belt sanders and backstand grinders accepting 4 x 36 inch abrasive belts in dry-operation configurations.

Installation Notes

Belt installation should be performed by a qualified operator with the sander powered off and unplugged. Confirm belt tracking direction arrow aligns with machine rotation before tensioning. Inspect the platen and idler wheel for wear or debris before mounting a new belt. Follow equipment manufacturer guidelines for proper belt tension to avoid premature belt failure or tracking issues.