COATED AND NON-WOVEN ABRASIVES
Flap Discs
Flap discs are versatile grinding and finishing tools having four main components: abrasive flaps, flap density (how the flaps are stacked), backing plate shape (flat or conical), backing plate material (fiberglass or plastic). All flap discs have flaps that are overlapped and glued to the backing plate. The flaps wear during use, exposing new abrasive grain. The different variations of the components above provide a variety of application choices ranging from heavy stock removal to blending to finishing. Flap discs are designed for portable grinder applications and can be the preferred choice over depressed center wheels or fiber discs. Applications: Grinding, stock removal, edge chamfering/beveling, weld blending, deburring/deflashing, rust removal, blending, cleaning and finishing Size Range: 4" : 5/8" hole 4-1/2" - 7" : 5/8"-11 discard mount, 7/8" hole, and 2" - 3" quick-change Grit Range: 24 – 120 Abrasive Grain: Ceramic Alumina, Ceramic/Zirconia Alumina blend, Zirconia Alumina, Aluminum Oxide Abrasive Flaps: Polyester, Cotton/Poly Blend Flap Disc Shape: Type 27 Flat and Type 29 Conical Abrasive Flap Density: Standard or high Backing Plate Material: Fiberglass and plastic Machine Used: RIGHT ANGLE GRINDER The complete product category is described above. See Norton Full Line Catalog #7362 for entire offering.
Flap Disc Shapes
Type 27 Flat – The Best Choice for Finishing • Used primarily on flat surfaces • The best choice for blending and smooth finishing
Type 29 Conical – The Best Choice for Aggressive Stock Removal • Conical flap discs have angled flaps and may be used on both contoured and edge work • The angle provides greater surface contact for stock removal on flat surfaces • The best choice when speed and stock removal are primary considerations
GRIND AT FLATTER ANGLES: 0° – 15°
GRIND AT STEEPER ANGLES: 15° – 25°
Abrasive Flap Densities
Standard Density • Excellent for heavy-duty applications and rapid stock removal
High Density • Ideal when working on uneven or curved surfaces, as well as finer grit blending
Backing Plate Materials
All flap discs are a combination of abrasive flaps adhered to a rigid backing plate. It is the backing plate that provides stability during operation. There are two main materials used: fiberglass and plastic. The fiberglass backing plate, along with the flap shape, helps to absorb vibration and is consumed during use with no smearing. Fiberglass is the most popular material because of its high strength and light weight. The plastic backing plate offers some additional conformability and is trimmable.
BACKING PLATE
Why Choose Flap Discs?
Flap discs replace both grinding wheels and fiber discs. The same flap disc can be used for applications ranging from stock removal to blending.
Flap Discs vs. Grinding Wheels • Faster stock removal • Smoother finish, no gouging • Cooler cutting, less glazing • Lightweight, easier to control • Less vibration, less operator fatigue • Reduced noise
Flap Discs vs. Fiber Discs • 20X longer life, reduced abrasive cost • Fewer disc changes, reduced labor cost • More consistent finish
• No back-up pad required • Easier storage, no curling • Reduced loading • Use flap discs one grit size coarser than fiber discs, except in 36 grit
EZ Essentials Stock Abrasives Program
www.nortonabrasives.com
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