3M™ Flexible Diamond Roll 6457J, M74, Type VF, Pattern 18, Config

Designed for Light Pressure Grinding on Contoured Surfaces

Combining the strength of a hard mineral abrasive with a very flexible conformable backing, 3M™ Flexible Diamond Roll 6457J is built for achieving a range of finishes. This diamond abrasive roll is built for use on hard-to-grind surfaces including thermal sprays, carbides, composites, chilled iron, non-ferrous metals and glass.

Built Tough, Finishes Fine

3M fastens the diamond mineral particles on 3M™ Flexible Diamond 6457J using a metal bond. Compared to resin or vitrified bonds, metal bonds tend to be the most tough — helping to strengthen the diamond abrasive and make it more durable. This VF cloth backing works very well for complicated geometries.

Open Dot Pattern: What Does it Mean?

The open dot pattern on each 3M™ Flexible Diamond abrasive product means that the diamond mineral particles are adhered to the backing in a series of small dots. This is designed to provide aggressive cutting action while also allowing consistent space for evacuation of stock particles during use, helping reduce loading and prolonging the life of the abrasive surface without sacrificing cut rates.

3M™ Flexible Diamond Belt 6457J is available in two open dot patterns for a range of uses. Pattern 18 is a small dot pattern equating to 25 pellets per inch. The B2 Pattern has medium dots with 17 pellets per inch, and is designed to deliver an aggressive cutting action with improved coolant flow and increased swarf removal. Generally, the smaller dot patterns will be the least aggressive and produce finer finishes, whereas the larger dot patterns will be more aggressive for stock removal.

Recommended Applications

Designed for light pressure grinding applications Contoured surfaces HVOC coatings

Exotic alloys

Better Science for Better Sanding from 3M

Part of the 3M portfolio of Superabrasives, the 3M™ Flexible Diamond Roll 6457J is an outstanding example of how 3M applies science to the lives of professionals in a range of specific industries where excellent grinding and finishing are critical. From its hard diamond mineral abrasive to its flexible cloth backing, it is built by 3M to help businesses like yours operate faster, better and more efficiently.

• Flexible backing is ideal for contours
• Large and small open dot patterns available for applications where loading and swarf removal are special concerns
• Diamond mineral excels at cutting hard-to-grind materials
• Very flexible backing readily conforms to contours
• Diamond abrasive works well on hard to grind materials
• Metal bonding adds durability and long belt life
• Open dot construction helps minimize loading, prolonging abrasive service life
• Rolls may be cut and converted to fit unique project needs