Flap disc

What you need to know about a lamella wheel

A flap disc is a grinding wheel made on which packets of lamellae (small pieces of abrasive cloth) on which abrasive grains are affixed. A flap disc can be used for many applications: Removal of weld beads, metal removal, deburring, removal of casting burrs, chamfering of edges edges, cleaning, matting and finishing. Because they are somewhat flexible allows you to follow the contours of the workpiece better than with than with a fiber wheel, for example. It is important that both the (linen) backing and the abrasive grain wear down and break out evenly. 
  
TIP:
If your angle grinder and the work allows, working with a 125 mm flap disc is is usually more economical than working with a 115 mm disc. For a small additional cost, you will have much more grinding material. You will find that you can work longer and faster. A 115 mm flap disc has the advantage that a lighter machine can be used. Handiness can be decisive. Also, more pressure can be applied to the tip with the same force. 
Go directly to our angle grinders:
Pneumatic version
Electrical version

Qualities and grains of a lamellar wheel

The qualities in which flap discs are available is enormous. This depends among other things on the carrier. This can be made of fiberglass, metal, plastic. In addition, the abrasive cloth used, the bond and the abrasive material itself is important. Per brand there are usually different qualities in various types, sizes and shapes. The most common grains with their application we list for you:

Aluminum oxide,'brown' for "lighter" applications such as sanding, aluminum, plastic, grinding of softer normal steels
See our flap discs with Aluminum Oxide grain

Zirconia alumina,'blue' for "normal" applications, long-term use, harder steels, stainless steel, welds etc.
Zirconiumoxide,'green' for "heavy duty applications where tool life and reduced heat development are important
See our flap discs with Zirconia grain

Ceramic grit:, 'red' for very heavy duty applications with a lot of pressure, high power machines without too much heat development
See our flap discs with ceramic grain

Separately we mention the CubitronII quality from 3M, famous for its extremely long tool life and fast removal. With this disc you will certainly save on the labor cost component in the production process.
See our flap discs with CubitronII grain

 

 

Flat or conical flap disc

The most common types are the flat slat and the tapered slat. The flat lamella wheel is mainly used on flat surfaces, the conical variant is used on sloping surfaces or places that are more difficult to reachable.  

Flap disc speeds

Disc diameter Peripheral speed Revs per minute
  115 x 22 80m/s 13300 rpm
  125 x 22 80m/s 12200 rpm

  180 x 22 80m/s 8500 rpm