3M 787C Fibre Disc, 4.5 Inch Diameter 60+ Grit 450E Hole Config, Case Of 100

In stock
Special Price Special Price $305.99

3M™ 787C Fibre Disc, 60+ Grit, 4.5 inch Diameter, 7/8 inch Center Hole, 450E Hole Configuration,  Orange Color, Case of 100

3M™ 787C Fibre Disc, is engineered for ultra-rapid cut, 3M™ Fibre Disc 787C features 3M Precision Shaped Grain. With its outstanding cut, durability, and ease of use, this disc offers a step up in performance over conventional fiber discs. Constructed with a grinding aid, it is an excellent choice for weld removal, blending, and finish refinement on stainless steel and high nickel alloys. This 787C fibre is used in the metalworking industry.  This disc is used on, aluminum, high nickel alloy, stainless steel, titanium, titanium/zirconium, and zirconium.

3M™ Fibre Disc 787C contains the exact amount of precision shaped grain (PSG) you need to optimize the balance of speed and longevity for challenging applications from grinding to deburring. Balance cost and output by selecting the abrasive with precisely the right amount of cut and life, no more and no less. Moreover, to keep the disc and workpiece cool, a grinding aid is incorporated, further prolonging disc life. Disc construction includes a stiff fiber backing and strong resin bond that provide durability and tear resistance, which along with abrasive grain enables operators to complete more parts per disc and requires fewer disc changes.

Product Details
  • Rapidly cuts hard to grind metals like stainless steel and high nickel alloys
  • Premium mineral excels at heavyweight applications such as weld grinding, beveling, and edge chamfering
  • 3M Precision Shaped Grain yields higher cut rates and cooler cut while completing more parts per disc than conventional fibre discs
  • Grinding aid minimizes grinding temperatures for heat-sensitive alloys
  • Long-lasting disc helps reduce cost
  • Stiff fiber backing and strong resin bond provide durability and tear-resistance
  • Compatible with 3M™ disc pad face plates and hubs (sold separately)
  • Overall Diameter (Imperial) 4.5 in
  • Attachment Type Center Hole
  • Hole Configuration 450E
  • Grit 60+
  • Shelf Life 3650 Days
  • Coat Type Closed Coat

The exceptional life and cut of our 787C Fibre Disc make it one of 3M’s best grinding discs for high production environments, providing significant gains over conventional fiber discs. When our highest tier fiber disc may be under utilized but productivity is still your bottom line, our 787C Fibre Disc delivers outstanding throughput. This fiber disc is an excellent choice for a range of applications such as:

  • Edge chamfering
  • Beveling
  • Deburring
  • Weld removal

Step Up Production with 3M Precision Shaped Grain
Developed for improved output on light to heavy stock removal, 3M Precision Shaped Grain lets operators finish tough tasks faster and with less fatigue. It wears evenly, and because the abrasive itself stays cooler and sharper, PSG abrasives last significantly longer than their conventional ceramic counterparts, ensuring extended high performance in production applications.

To accomplish this level of performance, 3M engineers apply proprietary microreplication technology to create precise triangular structures of 3M™ Ceramic Abrasive Grain, and then electrostatically orient them on the backing to form sharp peaks. These ultra sharp peaks slice cleanly through metal rather than gouging or “plowing” as conventional abrasives do, and continuously self sharpen as the points break off.

Choice of Power Tool Attachment
To suit many different project needs, we offer these discs in a range of sizes and a variety of attachment styles. Larger sized discs have a 7/8 inch center hole and require the use of a 3M™ disc pad face plate and hub, which are attached to a right angle grinder with a disc retainer nut (all sold separately). GL and TN quick change attachments are an option for 4 1/2 inch to 7 inch discs. Smaller sized quick change Roloc™ Discs are also available (sold separately) and provide reliable attachment to the tool and easy disc changes between applications.

Tips for Optimal Use
Fiber discs are heavy duty abrasives that feature a tough, stiff backing made from vulcanized fiber that resist wear and can handle tough grinding applications. For optimal performance, the disc should be used with a face plate of the appropriate density for the application—a lighter density face plate for lighter weight grinding applications, and a harder density face plate for more heavyweight grinding applications. Using the correct face plate for the application ensures that the abrasive mineral will re sharpen, maximizing the life of the abrasive.

3M Engineered for Peak Productivity
3M Abrasives engineers know abrasive construction. For more than 100 years 3M has been a leading abrasive supplier for the metalworking and woodworking industries.

Abrasive Material
Precision Shaped Ceramic
Beveling & Back Gouging, Deburring, Finishing, Grinding, Surface Preparation, Weld Grinding
Attachment Type
Center Hole
Backing Material
Bonding Type
Center Hole Diameter (Imperial)
0.875 in
Center Hole Diameter (Metric)
22.225 mm
Coat Type
Closed Coat
Color Family
Equipment - Machines
Right Angle Grinders
For Use On
Aluminum, High Nickel Alloy, Stainless Steel, Titanium, Titanium/Zirconium, Zirconium
Hole Configuration
Maximum Speed
13300 rpm
Overall Diameter (Imperial)
4.5 in
Overall Diameter (Metric)
114.3 mm
Product Color
Product Form
Aluminum, Stainless Steel
More Information
Brand3M Abrasives
Main CategoryAbrasives
Prop 65N/A
3M ID7100099287
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3M 787C Fibre Disc, 4.5 Inch Diameter 60+ Grit 450E Hole Config, Case Of 100

Special Price Special Price $305.99