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3M 4-1/2″ Cubitron II Fibre Discs 987C 60 Grit

$3.38 - $84.60

SKU: MMM051141-27653 Manufacturer Part #: 051141-27653 Categories: ,

·         3M Precision Shaped Grain (PSG) maintains super-sharp points that cut exceptionally fast with less pressure

·         PSG runs cooler and disc life is significantly longer, completing more parts per disc and requiring fewer disc changes

·         Stiff fiber backing and a strong resin bond provide durability and tear-resistance for heavyweight applications such as high-pressure weld grinding or beveling

·         Grinding aid incorporated on the disc minimizes grinding temperatures for heat-sensitive alloys


3M™ Cubitron© II Fibre Disc 987C offers significant gains in productivity on medium to heavy-duty operations with our exceptionally high-performing 3M Precision Shaped Grain combined with a stiff fiber backing. This disc achieves a higher cut-rate, greater durability, and longer life than other fiber discs””all with less grinding pressure.

3M™ Cubitron© II Fibre Disc 987C is suitable for use on almost all metals and excels in stainless steel and other nickel alloy applications. It is ideal for weld removal, beveling, removing mill scale, pits and imperfections, and more. Because 3M Precision Shaped Grain generates an exceptionally high cut-rate with less pressure, operators can finish tough tasks faster and with less fatigue. A grinding aid incorporated on the disc makes this an outstanding product for all types of metal””it helps keep the disc cooler on stainless steel and heat-sensitive metals such as nickel alloys and titanium, thereby reducing metal discoloration/oxidation and the chance of heat-related stress cracks. Moreover, because the abrasive itself stays cooler and sharper, our 3M Precision Shaped Grain discs last significantly longer than conventional ceramic grain discs, delivering a lower cost per grind with fewer disc changes.

Our 3M™ Cubitron© II products have raised the bar for high-performing abrasives. 3M Precision Shaped Grain outcuts and outlasts conventional ceramic industrial abrasives and requires less grinding force to achieve superior performance. The result is that operators can grind faster and complete more parts per disc with less muscle-work and fatigue.

To create 3M Precision Shaped Grain, our engineers started with 3M™ Ceramic Abrasive Grain and used proprietary technology to form the grains into triangular structures and electrostatically orient them on the backing to form sharp peaks that maximize cutting potential. These peaks slice cleanly through metal, rather than gouging or plowing as traditional abrasives do, and continuously self-sharpen as the points break off. This generates a super-fast cut and lessens heat build-up due to friction, reducing heat-related stress cracks and discoloration.

3M Precision Shaped Grain also wears evenly, and because the abrasive itself stays cooler and sharper, 3M™ Cubitron© II products last significantly longer than their conventional ceramic counterparts, ensuring extended high performance in production applications.

Fiber discs are heavy-duty discs ideal for weld removal, grinding, and blending large and small areas of metal surfaces. They feature a tough, stiff backing made from vulcanized fiber that resist wear and can handle tough grinding applications.


Abrasive Material

Precision Shaped Ceramic Grain

Abrasive Trade Name

Cubitron II

Applicable Materials

Cobalt & Nickel Alloy, Stainless Steel, Titanium


Grinding; Metal Stock Removal

Body Material








Dia. [Nom]

4 1/2 in




Threaded Hole

Speed [Max]

13,300 rpm




Fibre Disc

Used With

Right Angle Grinder


Package Size

1, 25




4 1/2




Sanding Disc


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