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.

Dynabrade 52712 2" (51 mm) Dia. Right Angle Depressed Center Wheel Grinder, .4 HP, 20,000 RPM, 3/8"-24 Spindle
Dynabrade 78580 1/4" Dia. x 1" W x 1/8" Center Hole, 80 Grit, 100/pack
Dynabrade 98289 Spacer
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
Dynabrade 07120 Front Bearing Plate
Dynabrade 52674 1 hp Straight-Line 6" (152 mm) Extension Die Grinder, Rear Exhaust, 6,000 RPM, 1/4" Collet
Dynabrade 31962 - 1-1/4" Dia. x 20' Length Conductive Vacuum Hose Assembly
Dynabrade 90767 2" Dia. x 1-1/2" W, Medium, Non-Woven DynaBrite Band, 10/pack
Dynabrade 18573 Rear Bearing Plate
Dynabrade 51225 2" Dia. Right Angle Disc Sander, Self-Generated Vacuum, 12,000 RPM
Dynabrade 64652 48" (122 cm) W x 96" (244 cm) L Downdraft Sanding Table, 230 V (AC)
Dynabrade 78725 5/16" x 5/8"-B53 Dynacut A/O Mounted Point, Vitrified, 5/pack
Dynabrade 40335 Dynafile II Abrasive Belt Tool, for Non-Woven Nylon Belts
Dynabrade 59043 6" Dia. Self-Generated Vacuum Dynorbital-Spirit Random Orbital Sander, 3/32" Orbit
Dynabrade 53249 9" Dia. Type 27 Vertical Depressed Center Wheel Grinder, 3 HP, 6,000 RPM, 5/8"-11 Spindle
Dynabrade 53477 Direct Drive Reversible Screwdriver, .5 HP, 3,700 RPM, 1/4" Hex Drive
Dynabrade 50018 Collet, M8 x 1.0 Female Thread, 3/8" Capacity
Dynabrade 52200 .4 hp Straight-Line Die Grinder, Front Exhaust, 25,000 RPM, 1/4" Collet
Dynabrade 53251 7" Dia. Vertical Disc Sander
Dynabrade 79926 6" Dia. x 120 Grit Vacuum PSA DynaCut Disc, 100/Pack
Dynabrade 57749 Pinion Gear
Dynabrade 48522 2" Dia. Right Angle Disc Sander, Rear Exhaust, .4 HP, 20,000 RPM 
