ТЕХНИЧЕСКИЕ НАУКИ Салимзянов Марат Зуфарович – кандидат технических наук, доцент кафедры эксплуатации и ремонта машин. <...> Касимов Николай Гайсович – кандидат технических наук, доцент кафедры эксплуатации и ремонта машин. <...> Salimzyanov1 1 Izhevsk State Agricultural Academy; 2 RSAU – MAA named after K.A. <...> Timiryazev CLASSIFICATION OF ROTARY WORKING ELEMENTS OF AGRICULTURAL MACHINES The article analyzes the modern and most popular rotary working elements and machines, and classifi es the working elements according to two main principles: the energy transferred to the working element and the spacing of a rotative axis. <...> The working elements can be rotary reactive and rotary active depending on the energy transferred to them. <...> When the energy is transferred from the motor to the rotor through the cardan shaft, hydraulic or electric actuator, the rotor spinning becomes active and the working element is called rotary active. <...> When the energy is transferred from the tractor to the rotary working element through tractor draft force and the working element gets spin from passive interaction with ground, i.e. infl uenced by external reactive force, these working elements are called rotary reactive. <...> Working elements are divided into three groups and seven subgroups A, B, C, D, E, F, G based on a position of a rotative axis. <...> This classifi cation describes all varieties of working elements and possible spacing of their rotative axis. <...> Authors: Pervushin Vladimir Fedorovich – Doctor of Engineering Sciences, Professor of Machinery Maintenance and Operation Department. <...> Izhevsk State Agricultural Academy (9, Studencheskaya street, Izhevsk, Russian Federation, 426069, e-mail: Pervushin54@mail.ru). <...> Salimzyanov Marat Zufarovich – Candidate of Engineering <...>