Flap disc

What you need to know about a lamella wheel

A flap disc is a grinding disc made on which packets of flaps (small pieces of abrasive linen) on which abrasive grains are placed. A flap disc can be used for many applications: Removal of weld beads, metal machining , deburring, removal of casting burrs , chamfering of edges and borders, cleaning, matting and finishing. Because they are somewhat flexible, you can follow the contours of a workpiece better with a flap disc than with a fiber disc, 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 it, working with a 125 mm flap disc 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 of being able to use a lighter machine. 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 lamellar discs are available is enormous. It depends, among other things, on the carrier. This can be made of fiberglass, metal, plastic. Also important is the abrasive cloth used, the bond and the abrasive itself. Per brand there are usually different grades in various types, sizes and shapes. We list the most common grains with their application for you:

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

Zirconium oxide,'blue' for "normal" applications, long-term use, harder steels, stainless steel, welds etc.
Zirconium oxide,'green' for "heavier" applications where tool life and reduced heat development are important
See our flap discs with Zirconium Oxide grain

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

Separately we mention the CubitronII quality of 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 lamella and the tapered lamella. The flat lamella wheel is mainly used on flat surfaces, while the tapered version is used on sloping surfaces or places that are more difficult to reach.  
 

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