From year to year, the agricultural sector of the economy of the Russian Federation is faced two tasks: the first is harvesting grain crops at a short stated agrotechnical time, and the second – to preserve the quality of food and seed grains until the moment of product sale or sowing. One of the most effective ways to preserve the quality of food and seed grains is its cleaning and sorting. They are performed by pneumatic sorting tables of periodic and continuous operations type. In our country, the most common types of tables are PSS-0.2, PSS-2.5, PS-10, TDV 150. They have a classic scheme of pneumatic systems, vibration tables with decks and their drive mechanisms. Their disadvantages include the impossibility of uniform grain supply and increased threshing at the outlet due to the lack of grain supply devices in the hoppers, which reduces the quality of cleaning and sorting. To eliminate the identified shortcomings, we have developed, manufactured and tested a pneumatic sorting table with a rotary feeder. At first, the best type of rotary grain feeder was specified, which turned out to be a three-bladed rotary feeder with a grain supply of 0.45 kg/s and a non-uniformity of supply of 12.5%. Then, comparative studies were carried out for the chosen type of rotary feeder and the quality indicators of the technological process were determined. We compared the developed pneumatic sorting table, equipped with a three-blade rotary feeder, to the base table PSS-0.2. It was found that when cleaning the grain of winter soft wheat of "Lgovskaya 8" variety (thousand grain weight — 46.4 g, moisture content — 14.2%, and density — 1.6 g/cm3), the studied device reduces the grain crushing by 0.06 % and non-uniformity of supply (11.5%). Also, it increases the laboratory and field germination (2% and 5%, respectively), the content of the most valuable output groups III and IV by 21.2% with a slight decrease in supply by 0.01% and productivity per hour of main operating time 0.04 t/h Thus, the possibility of using the rotary feeder in pneumatic machines is proved.