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  6. 3M™ Cubitron™ II Fibre Disc 982C

3M™ Cubitron™ II Fibre Disc 982C

44  Products
  • 3M Precision-Shaped Grain maintains super-sharp points that cut exceptionally fast with less pressure
  • Disc life is significantly longer, completing more parts per disc and requiring fewer disc changes
  • Reduces changeouts and downtime in manual, robotic and pressure-assisted applications
  • Triangular shaped ceramic grain lasts up to two times longer than other ceramic abrasives—it wears evenly, runs cool, and optimizes mineral breakdown
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For industrial/occupational use only. Not for consumer sale or use.
Overall Diameter (Imperial)
Center Hole Diameter (Imperial)
Attachment Type
Equipment - Machines
44 Products Available
Available options:
 Overall Diameter (Imperial), Center Hole Diameter (Imperial), Attachment Type, Equipment - Machines and Grit
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Attribute Name
Abrasive Material
Precision Shaped Ceramic
Alternative Sale Availability
6. This item is for industrial use only and there are no VOC restrictions.
Deburring, Grinding
Attachment Type
Center Hole, GL, TN
Backing Material
Bonding Type
CA Metalworking Solutions Level 2
Castings and Forging, Deburring & Surface Conditioning, Frame Building and Panel Bonding, Weld Removal
Center Hole Diameter (Imperial)
0.625 in, 0.866 in, 0.875 in
Center Hole Diameter (Metric)
15.875 mm, 22 mm, 22.225 mm
Coat Type
Closed Coat
Color Family
Equipment - Machines
Right Angle Grinders
For Use On
All Metals, Aluminum, High Nickel Alloy, Stainless Steel, Titanium, Zirconium
36+, 60+, 80+
Hole Configuration
400FF, 450E, 453EQ, 492EQ, 500P, 600T, 700BB, 709EQ, 912J, G500P, G700BB, TN400N, TN450E, TN500P, TN700BB
Marine, Metalworking
Aerospace, Land Systems, Maritime
Maximum Speed
1000 rpm, 12000 rpm, 13200 rpm, 13300 rpm, 15000 rpm, 6600 rpm, 8600 rpm
National Stock Number
3460015971930, 3460015971934, 3460015971937, 5345013573604, 5345015980169, 5345015980726, 5345015980727, 5345015980728, 5345015981196
Overall Diameter (Imperial)
4 in, 4.5 in, 4.528 in, 4.921 in, 5 in, 6 in, 7 in, 7.087 in, 9.125 in
Overall Diameter (Metric)
101.6 mm, 114.3 mm, 115 mm, 125 mm, 127 mm, 152.4 mm, 177.8 mm, 180 mm, 231.775 mm
Product Color
Brown, Maroon
Product Form
All Metals, Aluminum, Carbon Steel, Mild Steel
Product Details
  • 3M Precision-Shaped Grain maintains super-sharp points that cut exceptionally fast with less pressure
  • Disc life is significantly longer, completing more parts per disc and requiring fewer disc changes
  • Reduces changeouts and downtime in manual, robotic and pressure-assisted applications
  • Triangular shaped ceramic grain lasts up to two times longer than other ceramic abrasives—it wears evenly, runs cool, and optimizes mineral breakdown
  • Stiff fiber backing and a strong resin bond provide durability and tear-resistance for heavyweight applications such as high-pressure weld grinding and beveling

3M™ Cubitron™ II Fibre Disc 982C uses 3M Precision-Shaped Grain to generate up to twice the cut-rate, durability, and life of other fiber discs when grinding carbon steel — all with less grinding pressure required by the operator. That means less operator fatigue, faster throughput, and more parts per disc when tackling medium and high-pressure grinding applications.

Fibre disc with microscopic view of abrasive grain
3M™ Cubitron™ II Fibre Discs are powered by 3M Precision-Shaped Grain.

Raising the Bar in Abrasives

This premium fibre disc raises the bar in speed and stock removal. With 3M Precision-Shaped Grain, 3M engineers developed a process for generating triangular shaped ceramic grains that are electrostatically oriented on the backing to form sharp peaks and maximize cutting potential. These peaks act like individual cutting tools that slice through metal, and continuously fracture into new sharp cutting edges. The grains wear evenly and self-sharpen, reducing heat due to friction to deliver up to twice the life of other fibre discs, with less grinding pressure. The result is that 3M Cubitron™ II Fibre Disc 982C out-cuts and outlasts every conventional ceramic industrial abrasive disc on the market, maximizing productivity and helping reduce your overall abrasive spend.

Robot grinding a weld with a fibre disc
Long-lasting fibre discs maximize efficiency in robotic grinding applications.

Ideal for Robotic Weld Grinding

In medium and high-pressure applications like robotic weld grinding, it's important to choose a high-performance abrasive that cuts fast and lasts long. The self-fracturing mineral in 3M™ Cubitron™ II Fibre Disc 982C will keep your robot grinding welds long after other abrasives call it quits, reducing downtime and maximizing efficiency.

Curious about robotic material removal? The dedicated team of 3M robotics application engineers are ready to partner with you on your automation journey, from idea to implementation.
Learn more here.


Choose Your Grit

3M™ Cubitron™ II Fibre Disc 982C comes in a range of grits to suit your application needs — from coarse grinding large welds to blending and deburring.

Attributes of 36+ grit fibre discs
36+ grit fibre discs are ideal for beveling and grinding large welds, providing maximum stock removal and a coarse finish.
Attributes of 60+ grit fibre discs
60+ grit fibre discs cover a wide range of grinding and blending applications, providing good stock removal and a finer finish than 36+ grit discs.
Attributes of 80+ grit fibre discs
80+ grit fibre discs are best suited for grinding smaller welds, blending and deburring. They leave behind a finer finish than coarse grit discs.
3M fibre disc, angle grinder and disc pad face plates

3M offers a complete right angle system: fibre discs, backup pads and power tools. These components work together to optimize the performance of 3M abrasives.


Your Total Solution Supplier

Combined with 3M power tools and application engineering expertise, 3M™ Cubitron™ II Fibre Disc 982C is part of a complete abrasive solution. With the 3M abrasive solution, you’ll have the right abrasives, the right tools and industry-leading application engineers to help you take your shop to the next level.

Learn more about 3M Angle Grinder Systems here.

Customer Reviews
3M™ Cubitron™ II Fibre Disc 982C is rated 4.0 out of 5 by 4.
Rated 5 out of 5 by from Fast grinding I have been using these discs for 2 years or more. I originally purchase them for Stainless Steel. Was using "mops" (by others), but they clogged up or just did not cut fast enough. On first try could not believe how fast and aggressive the discs cut (I used 35 grit). I now use only these for almost all of my grinding. The "mops" are gathering dust:(
Date published: 2019-02-17
Rated 5 out of 5 by from Fantastic metal removal After trying many types of abrasive discs I came across the 3M Cubitron discs. I am truly AMAZED at how quickly and effortlessly they remove metal. It shears it away with little pressure applied leaving a smooth surface and the removed metal sweeps up like steel wool. Short strands of metal show how the Cubitron abrasive shears away what you are grinding or sanding. I’m impressed and sold on this product.
Date published: 2017-12-26
Rated 2 out of 5 by from Cuts great but warps then tears daily Just began using this product two weeks ago on a gas powered rotary device sharpening blades on a forestry mulcher. Work great, but the disc warps within a day and doesn't stay flat. then it tears and must be replaced. At $5 a pop, this is going to get expensive.
Date published: 2017-08-12
Rated 4 out of 5 by from Helpful information, with useful details... Have used 3M products. In the process of working with 3M; on various forms of fabrication work, the quality has been great.
Date published: 2015-03-17
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Large Volume Order

If you are considering a large purchase of this or other 3M Abrasive products our inside sales team is ready to help by providing additional information and options that our industrial customers typically seek when making abrasive procurement decisions. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we’ll do our best to prove that we should be your abrasive supplier of choice.

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For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.