Faster Cut, Finer Finish
Uniquely engineered to tackle the toughest jobs, 3M™ Diamond Cloth Belt 641WY is constructed with micron-graded diamond particles encapsulated in a ceramic bead. As the ceramic erodes, diamond particles continue to be exposed.
Diamond is extremely useful in grinding and polishing hard materials for its unique ability to produce excellent surface finishes combined with high removal rates.
This belt is engineered with a tough resin bond. This bond is durable and excellent for hard-to-grind materials. This product material can be used with oil and water based lubricants.
Use Wet or Dry
A water-resistant X-weight cloth backing means it can be used wet as well as dry. Coolant is useful to clear grinding swarf and prevent debris from scratching the surface of a workpiece. It also keeps grinding temperatures cooler.
Tough Abrasive for Hard-to-Grind Materials
This belt’s overall toughness makes it ideal for polishing and finishing ceramics, chilled cast iron, thermal spray coatings, HVOF coatings and the many extremely hard composites being used more in industries.

Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
Dynabrade 31920 - 1-1/4" (32 mm) Static Conductive Hose, Black
Dynabrade 82459 5" Dia. x 180 Grit A/O PSA Filmbac DynaCut Disc, 100/Box
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
3M 45704, Cubitron II Hookit Cloth Disc 947A, 60+ X-weight, 5 in x NH, Die 500X, 7100113137
Dynabrade 91242 8" Dia. x 220 Grit A/O Non-Vacuum PSA DynaCut Disc, 25/Box
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 45718, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 5 in x NH, D/F 5HL, Die 500FH, 7100113075
3M 05280, Marine Adhesive Sealant 4000 UV, White, 3 oz Tube, 7000121531, 6/Case
3M 45709, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 6 in x NH, Die 600Z, 7100113080
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M 35124, Grippy Sanding Cloth Trial Kit, 7100230957
Dynabrade 91531 5" Non-Vacuum 180 Grit, Dynacut Extreme Orange Premium Film PSA Disc, 50/pack
Standard Abrasives 714179, Aluminum Oxide Handy Roll, P240 J-weight, 1-1/2 in x 50 yd, 7100050575
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 95544 Gear Grease, 2.5oz. Tube
ACS Diamond Cloth Belt, CX1250 3" X 30" 125U 
