3M 7000118885 Psa Abrasive Disc 20 in 60 Grit Aluminum Oxide

Product Description

The 3M 7000118885 is a pressure-sensitive adhesive (PSA) abrasive disc designed for aggressive material removal on large flat surfaces. Built on an X-weight cloth backing, the disc handles the flex and tension demands of bench-top motors and random orbital sanders without delaminating under load. The abrasive surface uses aluminum oxide grain at 60 grit, a medium grade well-suited for stock removal, weld blending, and surface prep before finishing. At 20 inches in diameter, this disc covers wide work areas in a single pass, reducing cycle time on large workpieces. The maroon disc carries 3M series designation 348D and is sold as a single unit.

This disc is appropriate for metal fabrication shops, woodworking operations, and industrial surface prep environments where large-format grinding or sanding is performed on bench-top motor setups or random orbital sanders. The PSA mount system allows quick disc changes without mechanical fasteners, keeping downtime low during production runs. No vacuum holes are included, making it best suited for open-face platens or applications where dust extraction is handled separately. It is typically installed and replaced by machinists, fabricators, or skilled tradespeople familiar with large-format abrasive equipment.

Key Features

• 20-inch diameter covers large surface areas in fewer passes
• 60-grit aluminum oxide grain delivers consistent medium-grade stock removal
• X-weight cloth backing provides durability and flexibility under load
• Pressure-sensitive adhesive mount for fast, tool-free disc changes
• Compatible with bench-top motors and random orbital sanders
• No vacuum holes — suited for solid-platen use or external dust collection

Compatibility

Designed for use with bench-top motors and random orbital sanders that accept 20-inch PSA-mount abrasive discs. Part of the 3M 348D series.

Installation Notes

Disengage and power down the sander or bench-top motor completely before removing the old disc or applying the new one. Ensure the backing platen is clean and free of adhesive residue so the PSA layer bonds evenly across the full disc face. Peel the liner and apply the disc with firm, even hand pressure from center to edge to eliminate air pockets. Follow the equipment manufacturer guidelines for maximum RPM ratings to confirm this disc size is within the rated operating range of the machine.