Search for: [Abstract_pl = "The article consist information about pellets shredding in rotary dryer. The aim of this research was determine of the mechanical durability for three different woods pellets. The experimental results for the rotary drums were compared with results were carried out with EN 15210\-1\:2009 \(E\) norm. In article was determined ranging of characteristic velocity for the rotary dryer. The disintegration of the pellets is less than 2.5% \(permissible limit\). In addition, for each material the optimal velocity \- start and finally of cataracting, was determined."]