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More Information for 3M 33389RA
{Alternate Inventory Numbers: 33391, 33392, 33389}
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3M 33389RA  
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3M 33389RA Specifications
Attachment TypeQuick Change
Backing MaterialFiber
Diameter2.953 in
Mineral TypeCeramic
Performance LevelBest
Sanding MethodMachine
Sanding SurfaceFiller, Metal, Paint
Wet or DryDry
Cubitron II Fibre Roloc Disc, 3 in (75 mm)

3M’s Cubitron™ II Roloc™ Fibre Discs 786C is built for grinding, weld blending, deburring and other tough metal finishing jobs. 3M™ Precision Shaped Grain – a tough, hard, sharp ceramic abrasive – is resin-bonded to a stiff fiber backing. This disc lasts significantly longer than conventional ceramic grain discs, delivering a lower cost per grind with fewer disc changes.

Features:
  • Cubitron™ II cuts 30% faster and lasts 2x longer than conventional ceramic abrasives
  • Precision Shaped Grain (PSG) technology employs microreplication for extremely uniform abrasive
  • Triangular PSG abrasive grains are super-sharp and cut exceptionally fast
  • Grains are electrostatically oriented on abrasive surface for efficient cut, even wear
  • PSG self-fractures during use to maintain sharpness and prolong abrasive life
  • Stiff fiber backing and a strong resin bond lend this disc long life and tear-resistance
  • Significantly longer lasting, complete more parts per disc and requires fewer disc changes