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3M™ Fibre Disc 785C

Products
  • Ceramic/aluminum oxide abrasive blend self-sharpens yielding high cut rates and increased durability
  • Stiff fiber backing provides the durability needed for weld removal and other medium pressure applications such as deburring or rust removal
  • Grinding aid reduces grinding temperatures for processes involving heat-sensitive alloys such as stainless steel, nickel alloys, and titanium
  • Compatible with 3M™ disc pad face plates and hubs, and requires the use of a disc retainer nut (all sold separately)
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Overall Diameter (Imperial)
Max RPM
Grit
Products Available
Available options:
 Overall Diameter (Imperial), Max RPM and Grit
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Specifications
Attribute Name
Value
Application
Finishing, Grinding
Application Category
Blending/Deburring, Grinding/Metal Stock Removal
Attachment Type
Center Hole
Backing Material
Fibre
Brand
3M™
Center Hole Diameter
0.875 in
Center Hole Diameter (Metric)
22.225 mm
Coat Type
Closed Coat
Color
Orange, Orange
Equipment - Machines
Right Angle Grinders
Form Type
Fibre
For Use On
Aluminum, Stainless Steel
Grit
36, P120
Industries
Metalworking
Maximum Speed
80 mps
Max RPM
12000, 6600, 8600
Mineral Type
Ceramic
Overall Diameter (Imperial)
5 in, 7 in, 9.125 in
Overall Diameter (Metric)
127 mm, 177.8 mm, 231.775 mm, 127 mm, 177.8 mm, 231.775 mm
Position
Better
Primary Application
Metalworking
Product Form
Disc
Sub Industries
Sub Applications
Substrate
Aluminum, Stainless Steel
Product Details
  • Ceramic/aluminum oxide abrasive blend self-sharpens yielding high cut rates and increased durability
  • Stiff fiber backing provides the durability needed for weld removal and other medium pressure applications such as deburring or rust removal
  • Grinding aid reduces grinding temperatures for processes involving heat-sensitive alloys such as stainless steel, nickel alloys, and titanium
  • Compatible with 3M™ disc pad face plates and hubs, and requires the use of a disc retainer nut (all sold separately)
  • Available in a variety of sizes to suit different applications

3M™ Fibre Disc 785C is a durable fiber disc featuring high-performance 3M ceramic/aluminum oxide blend abrasive ideal for blending, grinding applications, and weld removal. Our proprietary ceramic/aluminum oxide blend stands up to challenging applications, outcutting and outlasting aluminum oxide.

3M™ Fibre Disc 785C
Our 3M™ Fibre Disc 785C incorporates a grinding aid to keep the workpiece cooler, protecting heat-sensitive alloys from heat damage and reducing re-work. These features along with a stiff fiber backing offer increased productivity for heavy-duty grinding on all metals, including stainless steel.

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 fracture as it should, maximizing the life of the abrasive. Face plates are sold separately.

Our 3M™ Ceramic Abrasive Grain is designed to enhance hardness and toughness of the mineral. For increased performance, 785C products feature aluminum oxide blended with 3M ceramic abrasive grain, yielding excellent performance on any metal. Perfect for moderate to heavy stock removal, ceramic abrasives are engineered to cut fast and handle intense heat and stress applications. Ceramic/aluminum oxide blends surpass regular aluminum oxide abrasives in cut-rate and durability, making them an excellent choice for difficult grinding 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 that resist wear and can handle tough grinding applications.

Customer Reviews
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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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