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.

3M 50018, Venture Tape Metallized Cloth Duct Tape 1502, Silver, 48 mm x 55 m (1.88 in x 60.1 yd), 7010337385
3M 07148, Dual Airline Back-Mounted Breathing Tube SA-2500/07148(AAD), 7000002006, 1 EA/Case
3M 26122, PPS Series 2.0 Cup, Midi (13.5 fl oz, 400 mL), 7100135960, 2 per carton
3M 33439, Cubitron II File Belt, 33439, 60+, 10 mm x 330 mm (3/8 in x 13 in), 7100033194, 10 belts per carton, 5 cartons per case
3M 53036, 663FC, 1/2" X 90", 20u, Diamond Trizact Belt 7100205970
3M 07394 Hookit Disc Pad, 178 mm x 25 mm M14-2.0 Internal, 7000045702
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
3M 97956, Super 77 CA Multipurpose Spray Adhesive, Low VOC <25%, Clear, 24 fl oz Can, 7100014109, 12/Case
Dynabrade 91425 1/4" W x 12" L 60 Grit A/O DynaCut Belt, 50/pack
Insize 4120-18N, METRIC THREAD RING GAGE, NO GO, M18x2.5, 6928640341816
3M 97419, Aluminum Foil Tape 3380, Silver, 48 mm x 45 m, 3.25 mil, 7000049613
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 49937, Roloc Disc 361F, 60 YF-weight, TSM, 2 in, Die RS200PM, 7000119016
3M 64324, Foil Tape 3340, Silver, 72 mm x 45.7 m, 3.9 mil, 7010335734
Dynabrade 51301 .5 hp Straight-Line Die Grinder
Dynabrade 78599 3/8" Dia. x 2" W x 1/8" Center Hole, 80 Grit, 100/pack
3Mâ„¢ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 98514, Premium Matte Cloth (Gaffers) Tape GT2, Black, 48 mm x 50 m, 11 mil, 7010336132
3M 20911, PSA Cloth Disc 348D, 50 X-weight, 2 in x NH, Die 200P, 7000118871
Norton 66254497067 - 2" X 1/4" 100 - 150 Grit Medium Grade Aluminum Oxide Vortex Rapid Blend Blue TR Non-Woven Abrasive Disc, 25 Each
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092 
