3M 7100033186 Abrasive File Belt 80 Grit 18x0.5 in Cubitron Ii

Product Description

The 3M 7100033186 is a Cubitron II 786F abrasive file belt engineered for aggressive metal grinding and weld removal. It measures 18 inches long by 1/2 inch wide and carries an 80-grit rating. The belt uses 3M Precision Shaped Grain, a ceramic and aluminum oxide blend that is precisely shaped, uniformly sized, and vertically oriented on a heavy-duty backing with a resin bond. A built-in grinding aid keeps the belt cutting cool and sharp, which reduces heat-related discoloration and stress cracking on high-strength steel. Designed for use with the 3M File Belt Sander, this belt is handled and installed by metal fabricators, body shop technicians, and welding professionals.

This file belt is suited for detail grinding tasks where a standard wheel or disc cannot reach. Common applications include grinding out rivets, removing spot welds, and cleaning weld seams in tight or recessed areas. The narrow 1/2-inch width allows access to confined joints and flanges common in automotive body, structural steel, and light fabrication work. The resin bond and cooler-running abrasive mineral make it well matched for work on heat-sensitive alloys and coated metals where discoloration must be avoided.

Key Features

• Cubitron II ceramic and aluminum oxide precision shaped grain for fast, consistent cut
• Resin bond with grinding aid promotes cooler operation and reduces heat stress on metal
• 80-grit rating suited for material removal, rivet grinding, and spot weld break-out
• Heavy-duty backing supports aggressive file belt sander use without premature breakdown
• Narrow 1/2-inch width accesses tight joints, flanges, and recessed weld areas
• Consistent performance maintained throughout belt life, reducing mid-job changeovers

Compatibility

Designed for use with the 3M File Belt Sander. Verify belt drive dimension compatibility with your specific sander model before installation.

Installation Notes

File belt installation and tensioning should follow the sander manufacturer's guidelines. Power down and disconnect the tool from its power source before changing belts. Inspect the belt for tears or tracking issues before starting the tool. Wear appropriate PPE including eye protection and gloves when operating abrasive belt equipment.

Technical Specifications

• Grit: 80
• Belt Length: 18 inches
• Belt Width: 1/2 inch
• Abrasive Mineral: Cubitron II ceramic and aluminum oxide blend
• Bond Type: Resin
• Backing: Heavy-duty
• Package Weight: 1.45 pounds
• Package Dimensions: 13.25 x 9 x 4.13 inches
• Unit of Measure: Box
• Minimum Order Quantity: 5

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100033186