3M 7100077040 Abrasive Flap Disc 3 Inch 40 Grit

Product Description

The 3M 7100077040 is a Cubitron II Roloca durable edge disc designed for aggressive material removal on metal and other hard surfaces. It combines the precision-shaped grain technology of Cubitron II abrasives with the Roloca quick-attach system, allowing fast disc changes without tools. The 3-inch diameter disc runs at up to 20000 RPM and cuts at a 40-grit level. A poly-cotton X-weight backing resists tearing and fraying, making it reliable for edge work where standard discs commonly break down. Metal fabricators, welders, and grinding professionals install this disc for deburring, blending, and edge finishing tasks.

This disc is suited for light to medium-duty edge grinding and surface conditioning in fabrication shops, manufacturing environments, and field metalwork. The 3-inch format fits compact right-angle grinders and die grinders equipped with Roloca-compatible backing plates. The 40-grit specification positions it for stock removal and weld seam blending where a moderate cut rate and surface finish are both required. It is sold per each unit.

Key Features

• Precision-shaped grain delivers sharp, cool, and consistent cutting action across the disc face
• Evenly spaced grain layout creates gaps that allow debris to escape, reducing loading
• Poly-cotton X-weight backing provides high tensile strength and resists fraying at edges
• Roloca attachment system enables fast, secure disc-to-tool mounting without extra hardware
• 3-inch diameter and 40-grit rating suit edge blending and weld removal on ferrous metals
• Rated to 20000 RPM for use with high-speed compact grinders

Compatibility

Designed for use with compact right-angle grinders and die grinders fitted with a Roloca-compatible backing pad. Confirm tool RPM rating meets or exceeds disc maximum before mounting.

Installation Notes

Installation should be performed by a qualified operator familiar with abrasive tool safety. Disengage and unplug or lock out the grinder before mounting or removing any disc. Verify that the tool speed rating equals or exceeds the 20000 RPM disc rating before operation. Always inspect the disc for damage before each use and never exceed the marked maximum speed.

Technical Specifications

• Diameter: 3 inches
• Grit: 40
• Maximum Speed: 20000 RPM
• Backing Material: Poly-cotton X-weight
• Attachment Type: Roloca
• Package Length: 13.59 inches
• Package Width: 11.88 inches
• Package Height: 6.2 inches
• Weight: 5.55 pounds
• UPC: 051141542411

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100077040