Fast and Flexible
A closed coat and a grinding aid make our 3M Cubitron II Abrasive Belt 947A an outstanding option for low to medium pressure applications on heat sensitive metals. The nature of the abrasive structure diverts heat to the swarf, keeping both belt and workpiece cooler. It is now available in grades 40+ (make to order), 60+, 80+ and now 120+ adding an improved solution for finer finishing applications.
Cutting Edge Performance for Low and Medium Pressure Sanding
A semi flexible Cubitron II belt the 3M 947A sports an X-weight poly-cotton backing. Among backing weights, an X-weight cloth is flexible and provides tensile strength as well.
A great number of small belt sizes which are nimble and maneuverable so operators can get in, over and around intricate parts. These belts are good options for low-and-medium-pressure offhand operations for use on the following equipment:
- Backstands
- File Belt Sanders
- Inline Sanders
- Stroke Sanders
How 3M Precision-Shaped Grain Works
3M Precision-Shaped Grain is designed to continuously fracture to form sharp points and edges that easily ?slice? through metal. It cuts faster, lasts longer and stays cooler.
Conventional ceramic abrasive grain tends to ?plow? through the metal, causing heat to build up in the workpiece and the abrasive ? resulting in a slower cut, shorter belt life and undesirable effects, such as burnishing.
3M Science. The Beginning of Cubitron II.
In 2009, 3M scientists had long believed abrasives would work better if each grain of the ceramic abrasive material was exactly the same size and shape. It would act more like a knife shaving off material and less like a plow bouncing along the surface, creating heat damage. The breakthrough came when they realized they could use microreplication technology 3M was already using to create reflective material for signs, and other purposes.
Within a short time, they had created 3M’s Precision Shaped Grain ? identical triangular-shaped abrasive grains electrostatically oriented and distributed uniformly on an abrasive backing. The end result is faster, cooler cutting action, improved productivity, less operator fatigue and longer belt life.

Standard Abrasives 863110, A/O Unitized Wheel, 631, 2 in x 1/4 in x 1/4 in, 7000144629
3M 69602, Cloth Belt 777F, 60 YF-weight, 1 in x 11 in, Sine-lok, Full-flex, 7010295223, 500 per case
3M 29851, Sanding Screen, 100 Grit, 15 in x NH, 7100160814
Dynabrade X51V 5" (127 mm) Dia. Central-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/16" Orbit, Hook-Face
3M 03174, Preservation Sealing Tape 481, Black, 1 in x 36 yd, 9.5 mil, 36rolls per case, 7000122478
3M 07414, Hand Sanding Metal Finishing Pad 7414NA, 4.375 in x 11 in, Maroon Medium, 7010315820
3M 50199, Finesse-it Hand Sanding Pad, 1-1/4 in, Soft Black Vinyl Face, 7000028401
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
3M 71346, 675L, 1" X 120", 125u, Diamond Microfinishing Film Belts, 7010534823
3M 37019, Versaflo Air Regulating Valve Assembly V-300/37019(AAD), 7100077491, 1 EA/Case
3M 29902, Sanding Screen, 150 Grit, 12 in x 18 in, 7100160763
ACS CX1250 Diamond Belt, 1/2" X 24" 60u
3M 29858, Sanding Screen, 80 grit, 12 in x 18 in, 7100161088
3M 45564, Cubitron ll Cloth Belt 784F, 80+ YF-weight, 3 in x 132 in, Film-lok, Single-flex, 7100145351, 25 per case
3M 03647, Scotch-Brite Edger Disc Pad, 7 in x .875 in, 7000133920
3M 70894, 641WY 1/2" X 24", 100 Mesh Diamond Cloth Belt, 7010533228
Dynabrade 51633 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet
3M 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
3M 08029, Marine Grade Silicone Sealant, Clear, 304 mL Cartridge, 7000120477, 12/Case
Dynabrade 78290 2" Dia. x 2S Fine, Type R Unitized Locking-Type Disc, 25/pack
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 08994, Scotch-Weld Epoxy Adhesive DP100, Clear, 48.5 mL Duo-Pak, 7100148763, 12/case
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100 
