3M 7100033184 Abrasive File Belt 36 Grit 18x0.5 Inch

Product Description

The 3M 7100033184 is a Cubitrona II 786F abrasive file belt engineered for aggressive metal grinding and weld removal. Built on a heavy-duty backing with a resin bond, it uses Precision Shaped Grain technology — a ceramic and aluminum oxide blend with grains that are precisely shaped, uniformly sized, and vertically oriented. That geometry allows the belt to slice into hard metal quickly while running cooler than conventional abrasives. The result is reduced risk of heat discoloration, oxidation, and stress cracking on high-strength steel. A grinding aid reinforces the cooler cutting action throughout the belt's full service life.

This belt is sized at 18 inches long and 1/2 inch wide, matching the form factor used with 3M file belt sanders for targeted grinding in tight or contoured areas. Typical applications include grinding out rivets, removing spot welds, and deburring in automotive, fabrication, and light industrial settings. The resin bond and Cubitrona II mineral work together to maintain consistent cut rate from first use to last, making the belt well suited for high-volume repair and production work where throughput and finish consistency both matter.

Key Features

• Cubitrona II ceramic and aluminum oxide blend delivers fast cut on hard metals
• Precision Shaped Grain — uniformly sized, vertically oriented for consistent stock removal
• Resin bond with integrated grinding aid promotes cooler operation and reduces heat-related metal damage
• Rated for approximately two times the belt life of conventional abrasive belts
• 36 grit for aggressive material removal and rivet or spot weld grinding
• Heavy-duty backing resists flex fatigue in file belt sander applications

Compatibility

Designed for use with 3M file belt sanders in applications requiring an 18-inch by 1/2-inch abrasive belt. Confirm sander model compatibility against the belt dimensions before installation.

Installation Notes

File belts of this type are installed and replaced by metalworkers, fabricators, and automotive technicians following standard abrasive tool procedures. Power down and disconnect the sander before changing the belt. Inspect the drive roller and idler for wear or debris before seating the new belt, and confirm belt tracking before resuming operation. Always wear appropriate eye and hand protection when operating abrasive equipment.

Technical Specifications

• Grit: 36
• Belt Length: 18 inches
• Belt Width: 0.5 inches
• Abrasive Mineral: Ceramic and aluminum oxide blend (Cubitrona II)
• Bond Type: Resin
• Package Weight: 1.822 pounds
• Package Dimensions: 8.38 inches L x 7.38 inches W x 4.13 inches H
• Sold As: Box (minimum quantity 5)
• UPC: 051131334439

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100033184