3M Flap Disc 577F – 40 Grit Aluminum Zirconia – Type 29 Quick Change Angle Grinder Disc – High Pressure Grinding Disc – 4.5″ x 5/8-11 Thread Cubitron

3M Flap Disc 577F – 40 Grit Aluminum Zirconia – Type 29 Quick Change Angle Grinder Disc – High Pressure Grinding Disc – 4.5″ x 5/8-11 Thread

3M Flap Disc 577F tackles the toughest high-pressure
metalworking applications and leaves a blended finish, all in a single step.
Our 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. From
the Manufacturer The 3M™ Flap Disc 577F Type 29 quick change disc combines
grinding and blending into a single step to tackle aggressive stock removal on
a variety of welds, coatings, and other metal fabrication applications and at
the same time produce a blended finish on the workpiece, offering labor cost
savings on heavy-duty jobs. The 577F 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. A grinding aid reduces grinding temperatures for
processes involving heat-sensitive alloys such as stainless steel, nickel
alloys, and titanium. Ideal for tough grinding applications where final finish
is important, the overlapping layers of the flaps 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. Type 29 is angled for aggressive stock removal and fast cutting on both
flat and curved surfaces. Each quick change disc comes packaged with a
disposable attachment hub and has a threaded center hole for attachment to a
right angle grinder. Four inch discs have a 3/8 inch threaded center hole;
4-1/2 and 7 inch discs have a 5/8 inch threaded center hole. The 4 and 4-1/2
inch diameter discs have a max RPM of 13,300, and the 7 inch discs have a max
RPM of 8,600. 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
fibre 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. For more than
a century, 3M has applied innovation and technology to improving our
customers’ lives and supporting their business goals. Today the company, from
its headquarters in St. Paul, Minnesota, serves industrial and commercial
customers and consumers in nearly 200 countries. Abrasive Systems products,
including a complete line of coated abrasives, microfinishing and
microreplicated abrasives, and hardware accessories, provide the finishing
touch for almost any surface conditioning application. The 3M brand, across
thousands of products, represents consistency, superior quality, and value.

Product Features

• 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
• Angled, Type 29 disc provides aggressive stock removal and fast cutting on both flat and curved surfaces