3M 7000028338 Abrasive Belt 15.5 in X 3.5 in Ao Cloth

Product Description

The 3M 7000028338 is a Trizact 237AA abrasive belt built on a proprietary microreplication technology that forms micron-graded aluminum oxide particles into three-dimensional pyramidal structures bonded to an X-weight cloth backing. As the outer layer of each pyramid wears away, fresh, sharp abrasive mineral is continuously exposed. The result is a consistent cut rate and a predictable fine finish from the first pass to the last. The belt measures 15.5 inches in length and 3.5 inches in width. Flexible cloth construction allows the belt to conform to contoured workpiece geometry without losing uniformity of finish.

This belt is suited to intermediate finishing and fine polishing operations that precede plating, buffing, or similar surface-preparation steps. The three-dimensional abrasive structure makes it a reliable choice in robotic and automated belt-sanding systems where consistent, repeatable surface finish is critical across high production volumes. Manual applications in metal fabrication and finishing shops also benefit from the cooler-running pyramid design, which reduces heat buildup at the workpiece surface. Licensed trade professionals and industrial finishing technicians are the primary installers and operators.

Key Features

• Microreplication technology forms aluminum oxide into self-sharpening pyramidal abrasive structures
• Continuously exposes fresh mineral as pyramids wear, maintaining consistent cut throughout belt life
• Runs cooler than conventional coated abrasives, reducing heat buildup on the workpiece
• Flexible X-weight cloth backing conforms to contoured surfaces for uniform finish
• Three-dimensional design delivers repeatable finishes in robotic and automated applications
• Produces finer surface finishes than conventionally electrostatically coated abrasive belts

Compatibility

Designed as an OEM-style replacement or direct-use abrasive belt for belt sanders and finishing machines that accept a 15.5-inch by 3.5-inch belt in intermediate finishing and fine polishing applications.

Installation Notes

Installation and tensioning of abrasive belts should be performed by qualified finishing equipment operators following the machine manufacturer's guidelines. Power down and lock out the sanding or grinding unit before mounting or removing the belt. Verify that belt travel direction matches the arrow marked on the backing, if present, to ensure proper grain orientation. Wear appropriate PPE including eye protection and dust respiratory equipment during operation.

Technical Specifications

• Belt Length: 15.5 inches
• Belt Width: 3.5 inches
• Abrasive Mineral: Aluminum Oxide
• Backing Material: X-Weight Cloth
• Abrasive Technology: Microreplication (Trizact)
• Weight: 0.06 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000028338