3M 7010339879 Floor Surfacing Disc 7in X 7/8in 40 Grit

Product Description

The 3M 7010339879 is a Regalite floor surfacing disc designed for use with floor edger machines on bare wood and non-gummy floor finishes. Built around 3M's purple Regalite mineral and a tough paper backing, this 7-inch diameter disc runs cooler and cuts faster than conventional abrasive discs, extending disc life and reducing downtime during floor refinishing work. The 40-grit abrasive rating makes it well suited for aggressive stock removal in the early stages of a wood floor sanding project. Flooring contractors and finishing professionals rely on this disc for consistent, productive performance across edging applications.

This disc is used in residential and light commercial floor refinishing where an edger machine handles perimeter areas that larger drum sanders cannot reach. It is appropriate for bare wood stripping and the removal of non-gummy old finishes on hardwood and similar wood flooring surfaces. The 7/8-inch arbor hole fits standard floor edger spindles. With a 40-grit cut, it handles initial material removal before finer grits are used for finish preparation.

Key Features

• Purple Regalite mineral abrasive for faster cutting and cooler running than conventional discs
• Tough paper backing resists tearing under edger load
• 40-grit rating for aggressive stock removal on bare or previously finished wood floors
• 7-inch diameter with 7/8-inch arbor hole for standard floor edger compatibility
• Designed for reduced heat buildup, extending usable disc life

Compatibility

Designed as an OEM-style replacement abrasive disc for standard floor edger machines accepting a 7-inch disc with a 7/8-inch arbor hole.

Installation Notes

Installation is performed by flooring contractors or experienced finishing professionals. Before changing discs, power off and unplug the floor edger completely and allow the disc to come to a full stop. Secure the disc firmly to the edger pad according to the machine manufacturer's guidance before operating. Always wear appropriate respiratory and eye protection when sanding floor surfaces.

Technical Specifications

• Disc Diameter: 7 inches
• Arbor Hole: 7/8 inches
• Grit: 40
• Mineral Type: Regalite
• Grade Series: 752I
• Backing: Paper
• Weight: 0.06 pounds
• Unit of Measure: Each
• UPC: 51115092718

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010339879