3M 7000120240 Psa Cloth Disc 777F 12 Inch 36 Grit

Product Description

The 3M 7000120240 is a PSA (pressure-sensitive adhesive) cloth disc in the 777F series, designed for moderate stock removal through finishing on metal workpieces. It uses a ceramic aluminum oxide grain blend that delivers faster cut rates and longer service life compared to standard aluminum oxide abrasives. The heavyweight cloth backing supports high-pressure grinding applications, and an integrated grinding aid helps manage heat buildup when working exotic metals such as stainless steel. Licensed trades and fabrication shops rely on this disc for consistent, controlled material removal across a range of metal surfaces.

This disc is suited for metal fabrication, weld blending, and surface preparation tasks in both shop and field environments. It performs on ferrous metals including carbon steel and stainless steel, as well as non-ferrous metals such as aluminum and copper alloys. The 36-grit designation places it in the coarse cutting range, making it appropriate for aggressive stock removal before transitioning to finer finishing steps. The PSA backing allows quick disc changes on compatible backup pads without the need for additional adhesives or fasteners.

Key Features

• Pressure-sensitive adhesive backing attaches securely to backup pad and releases cleanly without residue
• Ceramic aluminum oxide grain blend provides faster cut rates and greater durability than standard aluminum oxide
• Heavyweight cloth backing withstands high-pressure, aggressive grinding applications
• Integrated grinding aid reduces heat buildup on exotic metals including stainless steel
• Suitable for use on both ferrous and non-ferrous metals
• 36 grit for aggressive stock removal in the coarse cutting range

Compatibility

Designed for use with PSA-style backup pads that accept 12-inch diameter cloth discs rated for up to 2000 RPM operation.

Installation Notes

Installation is performed by metal fabricators and abrasives technicians. Before mounting the disc, ensure the grinder or disc sander is powered off and fully stopped. Verify that the backup pad is clean, flat, and free of debris before pressing the PSA backing firmly into place to ensure full adhesive contact. Never exceed the rated speed of 2000 RPM, and confirm the backup pad speed rating meets or exceeds the disc rating before use.

Technical Specifications

• Disc Diameter: 12 inches
• Grit: 36
• Abrasive Material: Ceramic Aluminum Oxide Blend
• Backing Type: Heavyweight Cloth
• Attachment Method: Pressure-Sensitive Adhesive (PSA)
• Max Speed: 2000 RPM
• Weight: 0.41 pounds
• Package Dimensions: 12.88 inches x 12.5 inches x 1.5 inches
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000120240