3M 7000120271 Trizact 237AA Abrasive Belt 15.5x3.5 Inch Ao

Product Description

The 3M 7000120271 is a Trizact 237AA abrasive belt designed for intermediate finishing and fine polishing applications. It uses 3M microreplication technology, where micron-graded aluminum oxide particles are formed into three-dimensional pyramids and bonded to an X-weight cloth backing. As each pyramid wears down, fresh cutting mineral is continuously exposed, delivering a consistent cut rate and predictable surface finish throughout the belt's service life. The flexible cloth backing conforms to contours, making it well suited for shaped and profiled workpieces. Installed by metalworking and finishing technicians, this belt is commonly used ahead of plating or buffing operations.

This belt is used in industrial and manufacturing finishing environments where tight surface finish tolerances are required. Its three-dimensional abrasive structure makes it particularly effective in robotic and automated grinding applications, where consistent, repeatable results are critical across long production runs. It performs on metals where a fine, uniform finish is needed prior to downstream processes such as electroplating, chrome buffing, or anodizing. The 15.5-inch length and 3.5-inch width fit standard wide-platen and contact-wheel belt grinder configurations used in fabrication and finishing shops.

Key Features

• Microreplication technology forms aluminum oxide into self-sharpening abrasive pyramids for consistent cut throughout belt life
• Fresh mineral is continuously exposed as pyramids wear, reducing glazing and heat buildup compared to conventional coated abrasives
• X-weight cloth backing provides flexibility for finishing contoured and profiled surfaces
• Three-dimensional abrasive design delivers repeatable, uniform finishes in robotic and automated applications
• Produces finer surface finishes than conventionally electrostatically coated abrasive belts
• Suited for intermediate finishing and fine polishing prior to plating or buffing

Compatibility

Designed for use on standard belt grinders and finishing machines that accept 15.5-inch by 3.5-inch abrasive belts. Suitable for metalworking applications requiring fine finishing on ferrous and non-ferrous workpieces.

Installation Notes

Belt installation and replacement should be performed by qualified finishing or grinding equipment operators following the machine manufacturer's guidelines. Power down and lock out the belt grinder before changing belts. Verify belt tracking and tension per equipment specifications before resuming operation. Confirm the belt runs in the direction of the arrow marked on the backing, if present, to ensure proper abrasive engagement.

Technical Specifications

• Abrasive Material: Aluminum Oxide
• Backing Material: X-Weight Cloth
• Belt Length: 15.5 inches
• Belt Width: 3.5 inches
• Abrasive Structure: Trizact Microreplication (237AA)
• Unit of Measure: Each
• Weight: 0.09 pounds

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000120271