3M 7100225974 Flexible Diamond Qrs Cloth Disc 7in M40

Product Description

The 3M 7100225974 is a flexible diamond abrasive cloth disc designed for heavy-duty material removal on hard-to-grind surfaces. Built on a QRS hook-and-loop backing, it measures 7 inches in diameter with a 1-inch thickness profile and uses an M40 micron diamond grade arranged in Pattern 18. A metal-plated bond anchors micron-graded diamond abrasive particles directly to the backing, delivering consistent cut rates while producing a controlled surface finish. This disc is suited for grinding and finishing operations where conventional abrasives fail to perform, and it is typically installed and used by machinists, fabricators, and tool-and-die technicians working with difficult workpiece materials.

This disc is intended for use on hard-to-grind materials including stone, glass, ceramic, metal, carbide, and composite substrates. The flexible cloth construction allows the disc to conform to contoured or irregular surfaces, making it appropriate for both flat stock removal and profile finishing. Pattern 18 diamond distribution is engineered to balance aggressive stock removal with improved surface finish quality, reducing the need for additional finishing passes. Typical applications include precision grinding, deburring, and surface conditioning in shop or field environments where material hardness demands a diamond abrasive solution.

Key Features

• M40 micron-graded diamond abrasive for consistent, controlled stock removal
• Metal-plated bond securely anchors diamond particles to the backing for extended disc life
• QRS hook-and-loop backing for fast disc changes without tools
• Flexible cloth construction conforms to contoured and irregular workpiece surfaces
• Pattern 18 diamond layout balances cut rate with improved finish quality
• Compatible with hard-to-grind materials: stone, glass, ceramic, metal, carbide, and composites

Compatibility

Designed for use with QRS hook-and-loop compatible random orbital and disc grinding tools. Suitable for grinding and finishing applications on stone, glass, ceramic, metal, carbide, and composite materials where M40 micron diamond abrasive is specified.

Installation Notes

Installation is performed by aligning the QRS hook-and-loop backing to a compatible disc pad and pressing firmly to seat. Always power down and disconnect the tool from its power source before mounting or removing the disc. Inspect the backing pad for wear or contamination before each disc change, as a degraded pad reduces holding force and can cause disc separation under load. Eye protection and appropriate respiratory PPE should be worn when grinding ceramic, glass, or composite materials.

Technical Specifications

• Diameter: 7 inches
• Thickness: 1 inch
• Abrasive Type: Flexible Diamond
• Diamond Grade: M40 Micron
• Pattern: Pattern 18
• Backing Type: QRS Hook and Loop Cloth
• Bond Type: Metal Plated
• Unit of Measure: Each
• Minimum Order Quantity: 1
• UPC: 00051115197406

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100225974