3M 7010325339 Diamond Polishing Cloth Belt 25.21x3 in

Product Description

The 3M 7010325339 is a diamond polishing cloth belt engineered for precision finishing on extremely hard materials. Designated as the 652WY, it uses micron-graded diamond mineral bonded with a long-lasting resin system and supported by a water-resistant X-weight cloth backing. This construction is designed to achieve consistently fine surface finishes on materials that rate harder than 62 on the Rockwell C scale, where conventional abrasive belts fall short. Grinding technicians, tool and die makers, and precision machinists typically install and run this belt in high-demand finishing applications.

This belt is well-suited for superfinishing and polishing applications in both production and maintenance environments. It serves as a direct alternative to conventional superfinishing techniques when working with carbide tooling, hardened steel, ceramics, and other difficult-to-grind substrates. The water-resistant backing supports wet operation, and the belt is engineered to run with coolant to extend service life and improve surface finish results. Applications include precision grinding, lapping, and final-stage finishing where tight tolerances and smooth surface profiles are required.

Key Features

• Micron-graded diamond mineral delivers finer, more consistent surface finishes on hard substrates
• Resin bond provides long-lasting abrasive retention under demanding load conditions
• Water-resistant X-weight cloth backing supports coolant-assisted operation
• Engineered for materials harder than 62 Rockwell C where conventional abrasives lose effectiveness
• Serves as an alternative to conventional superfinishing techniques
• Should be run with coolant to maximize performance and belt life

Compatibility

Designed for use on belt grinding and finishing machines that accept 25.21-inch by 3-inch abrasive belts. Best suited for applications involving materials harder than 62 on the Rockwell C scale.

Installation Notes

Installation should be performed by a qualified grinding or machine tool technician following all machine manufacturer guidelines. Power down and lock out the grinding machine before mounting or removing the belt. Verify belt tracking and tension before resuming operation. This belt requires coolant during use — running it dry will reduce performance and significantly shorten service life.

Technical Specifications

• Belt Length: 25.21 inches
• Belt Width: 3 inches
• Abrasive Type: Micron-graded diamond
• Bond Type: Resin
• Backing Material: X-weight cloth, water-resistant
• Color: Brown
• Weight: 1 pound
• Unit of Measure: Each
• UPC: 00051111517833

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010325339