3M Diamond Patterns
Our 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 6451J is available in three open dot patterns for a range of uses. Pattern 18 is a small dot pattern equating to 25 pellets per inch Our 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. Pattern 21 is offered for grades 250µ and 300µ only. It utilizes larger dots to assist in applications where high stock removal is required and loading is an issue. 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 hard grinding applications with contact wheels or platens
- Roll grinding
- Wet grinding
Better Science for Better Sanding from 3M
Within the 3M portfolio of Superabrasives, our 3M™ Flexible Diamond Belt 6451J 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 strong, supportive cloth backing, it is built by 3M to help businesses like yours operate faster, better and more efficiently.

Dynabrade 56451 Short Block Assy- 11" Gear Driven
Dynabrade 79897 8" Dynacut 320 Grit Extreme Orange Scalloped Edge Discs, 25 per box
Dynabrade 95585 Spring Pin
Dynabrade 54775 4" (102 mm) Dia. Right Angle Type 27 Depressed Center Wheel Grinder, .7 HP, 13,500 RPM, 3/8"-24 Spindle
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Dynabrade 57584 6" Dia. Wet Dynorbital Supreme Random Orbital Sander, Basic, 3/32" Orbit
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Dynabrade 58514 2-3/4" W x 7-3/4" L Dynabug II Orbital Sander, Non-Vacuum, .11 hp, 8,000 RPM, 3/16" Orbit
Dynabrade 78835 Crimped Wire End Brush 1" Dia. x .006 x 1" Stainless Steel
Dynabrade 11026 1/2" W x 7" L DynaPad Hard Platen Pad 5-Pkg.
Dynabrade 56671 Handle
Dynabrade 98275 - 1/2" Male Coupler with 1/2" Male Plug Assembly
Dynabrade 11815 Bolt
Dynabrade 14344 Tension Idler Arm
Dynabrade 93335 Carbide Burr, 3/8" Dia., SE-3 D/C Burr, Oval, 5/8" Flute L, 1/4" Shank
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Dynabrade 91125 3/4" W x 18" L 120 Grit A/O DynaCut Belt, 50/pack
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Dynabrade 59083 Felt Washer
Dynabrade 59088 Vacuum Nozzle
Dynabrade 56859 6" Dia. Non-Vacuum Dynorbital Supreme Random Orbital Sander, 3/32" Orbit
Dyanbrade NF1B NitroFile Abrasive Belt Tool with 11206 Contact Arm and 15352 Drive Wheel, 5.hp 7 Degree Offset, 20,000 RPM, Gearless, Front Exhaust
Dynabrade 61503 Systainer T-Loc, Size II
Dynabrade 78483 3" Dia. x 1", 1/4-20 Female Center Thread, A/O, 120 Grit, 10-Ply J-DynaCut Cross Pad, 100/pack
Dynabrade 96644 Motor Tune-Up Kit for 2.8hp Rebel Series
Dynabrade 52563 7" Dia. Right Angle Disc Sander
Dynabrade 96542 Motor Tune-Up Kit
Dynabrade 07108 Rotor
Dynabrade 57573 5" Dia. Wet Dynorbital Supreme Random Orbital Sander, Deluxe, 3/16" Orbit
Dynabrade 91572 6" Dynacut Extreme Orange Premium Film Disc, 80 Grit, Hook & Loop, Non-Vacuum, 50/Box
Dynabrade 91705 DynaMesh 3" 220 Grit Hook & Loop Discs, 50 per box
Dynabrade 01558 Insulator Sleeve
Dynabrade 56818 5" Dia. Self-Generated Vacuum Dynorbital Supreme Random Orbital Sander, 3/16" Orbit
Dynabrade 97566 1/4" Safety Coupler, Female
Dynabrade 79059 1/4" W x 24" L 120 Grit A/Z DynaCut Belt, 50/pack 

