3M 7100076894 Cubitrona Ii 947A Disc 3 Inch 120 Grit

Product Description

The 3M 7100076894 is a Cubitrona II Roloca Durable Edge Disc in the 947A series, designed for precision grinding and edge finishing on metal and fabricated workpieces. This 3-inch disc runs at up to 20000 RPM and features 3M Precision-Shaped Grain technology, which delivers sharp, consistent cutting action while running cooler than conventional abrasive grains. The poly-cotton X-weight backing is engineered for high tensile strength, making it well-suited for edge work where standard discs tend to tatter or fray. Licensed tradespeople in metal fabrication, welding shops, and structural steel work will find this disc a reliable tool for aggressive material removal along part edges.

This disc is built for edge grinding and finishing applications in both production and field environments. The Roloca attachment system allows fast, secure mounting to compatible right-angle grinders and disc tools, reducing changeover time during high-volume operations. The evenly spaced grain pattern creates relief channels that allow swarf and debris to escape the cutting zone, helping the disc resist loading and maintain cut rate throughout its service life. Typical applications include weld seam blending, edge chamfering, and surface conditioning on steel and other metals.

Key Features

• 3M Precision-Shaped Grain provides sharp, cool, consistent cutting action across the disc life
• Evenly spaced grain with debris-escape gaps resists loading and maintains cut rate
• Poly-cotton X-weight backing delivers high tensile strength for durability on edges
• Heavy X-weight construction withstands edge contact without tattering or fraying
• Roloca attachment system enables fast, secure disc-to-tool mounting

Compatibility

Designed for use with right-angle grinders and disc tools equipped with a Roloca-compatible attachment system. Verify tool RPM rating meets or exceeds the 20000 RPM maximum of this disc before mounting.

Installation Notes

Installation and disc changes must be performed by a qualified operator with the grinder fully de-energized and the power source disconnected. Confirm the tool's rated free speed meets the disc maximum of 20000 RPM before use. Inspect the disc for cracks, chips, or damage before each mount and never use a damaged disc. Follow ANSI B7.1 safety requirements for the use, care, and protection of abrasive wheels.

Technical Specifications

• Disc Diameter: 3 inches
• Grit: 120
• Maximum Speed: 20000 RPM
• Backing Weight: X-Weight (Heavy)
• Backing Material: Poly-Cotton
• Attachment Type: Roloca
• Unit of Measure: Each
• Minimum Order Quantity: 200
• Weight: 5.056 pounds
• Package Length: 13.59 inches
• Package Width: 11.88 inches
• Package Height: 6.2 inches
• UPC: 051141542695

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100076894