3M Flap Disc 577F

3M Flap Disc 577F

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  • Alumina zirconia mineral with a grinding aid provides more cutting power than aluminum oxide across all metal types
  • Flaps combine grinding and blending into one step for time savings
  • Heavyweight polyester-backed flaps provide longer life on high-pressure applications such as sharp-edge work and beveling
  • Quick change disc simplifies disc changes

 

Specifications

Application Category
Blending/Deburring, Finishing/Polishing, Grinding/Metal Stock Removal
Applications
Deburring, Finishing, Grinding, Polishing
Attachment Type
Threaded
Backing Material
Polyester Cloth
Backing Weight
YF Weight
Brand
3M™
Center Hole Diameter
0.375 Inch, 0.62 Inch, 0.625 Inch, 0.87 Inch, 0.875 Inch
Center Hole Diameter (Metric)
15.748 mm, 15.875 mm, 22.098 mm, 22.1 mm, 9.525 mm
Coat Type
Closed Coat
Color
Green
Converted Form
Flap Disc
Diameter
4 Inch, 4.5 Inch, 7 Inch
Diameter (Metric)
101.6 mm, 114.3 mm, 177.8 mm
Equipment - Machines
Right Angle Grinders
Form Type
Type 27, Type 29
For Use On
Carbon Steel, Stainless Steel
Grade
36, 4000.00%, 60, 80
Industries
Metalworking
Max RPM
13300, 15000, 8600
Max Speed
80 mps
Mineral Type
Alumina Zirconia
Position
Better
Product Form
Disc
Sub Industries
Metal Fabrication
Substrates
Carbon Steel, Stainless Steel
Thread Size
3/8-24 INT, 5/8-11 INT

 

The 3M™ Flap Disc 577F tackles the toughest high-pressure metalworking applications and leaves a blended finish, all in a single step. This abrasive flap disc features fast-cutting alumina zirconia mineral on durable polyester-backed flaps for extra cutting power, and long life on heavy duty applications such as weld removal, sharp-edge work, and beveling.

3M™ Flap Disc 577F
Detail Comparison Close-Up with standard flap disc

 

Ideal for tough grinding applications where final finish is important, the overlapping layers of the flaps on the 3M™ Flap Disc 577F continually wear away with use to expose fresh abrasive mineral for a fast, consistent cut, while the cushioning of the flaps creates a blended finish. Flap discs typically generate a finish one grade finer than the disc is graded, reducing finishing steps. A grinding aid reduces grinding temperatures for processes involving heat-sensitive alloys such as stainless steel, nickel alloys, and titanium. 

Flap discs are used on a right angle grinder. Giant size flap discs have the same diameter as standard flap discs but wider flaps. The wider flaps create extra-thick layers and are packed with 25% more abrasive material than on standard flap discs, for more aggressive cut and longer life. 

Flap discs typically generate a finish one grade finer than the disc is graded, reducing finishing steps. A grinding aid reduces grinding temperatures for processes involving heat-sensitive alloys such as stainless steel, nickel alloys, and titanium.

 

Flap discs are three-dimensional grinding discs with overlapping layers of abrasive-coated, fiber-reinforced flaps that fan out from a central hub. These flaps continually wear away with use to expose fresh mineral for a fast, consistent cut. The one-step alternative to bonded wheels and fiber discs, flap discs grind and finish in a single step, making them a time and cost-saving solution in many typical applications. Under normal conditions, flap discs will generate a finish that is one grade finer than the finish of a fiber disc of the same grade. And, because their overlapping construction allows more abrasive material to be loaded onto the cutting surface, they far outlast typical discs. Flap discs have the flexibility to easily follow curves and contours while delivering less gouging and enhancing operator comfort. They are ideal for a wide range of applications, including weld grinding, deburring, rust removal, edge grinding, and weld seam blending.