The paper presents an overview of research on the working processes of disk working bodies of technological machines. It has been established that the existing designs of forest plows designed for processing forest soil in uncorrected cuttings have disadvantages, consisting in insufficient depth of the rear discs and the use of a ballast box, as well as high dynamic loads when encountering obstacles. The aim of the study is to increase the efficiency of working processes of forest disk plows by substantiating the parameters of safety devices of disk working bodies when working in cuttings.