The technological process of materials shredding, especially biological material, with a precise RPW shredder, requires control of its many elements. One of them, not methodologically recognized so far, is the flow of air conditioning an appropriate product’s quality and shredding capacity. In the article, there are presented the first results of studies of the process of pneumatic transport in a shredder, its analysis and simulation attempts, which shall make it possible to reach the optimum product’s capacity and quality, constituting the basis for biological diet supplements.