The article presents a comparative analysis of the main parameters and modes of operation of combined small-sized tillage units with various working bodies. Introduction. Farms, which increasingly use tillers, are the basis of agriculture and make it possible to provide the population with high-quality food. Existing crop cultivation technologies lead to over-compaction of the top layer of soil due to the need for multiple passes of the tillerblock. As a result, the problem arose of developing complex combined mechanisms that allow several agrotechnical measures to be carried out in one pass. Materials and methods. Mari State University has developed various designs of small-sized combined levelers-grinders, as well as a segment milling cutter for a tillerblock. When developing the design and technological scheme of the combined tillage unit, the technical parameters of the tool and the conditions for performing various operations in one pass were taken into account. A study was conducted in the field to determine the main factors affecting the process of soil leveling through its crumbling. The following factors have a significant impact on this process: soil tillage depth, load on the roller and the speed of rotation of the roller rotor. To analyze the data obtained by the study and plotting, standard programs for personal computers were used ‒ Excel, Maple and STATISTICA. Research results, discussion. The experimental research plan included several stages, including conducting preliminary one-factor and full three-factor experiments. After carrying out one-factor experiments, the relationships between the indicators of soil lumpiness and such factors as the depth of treatment, engine speed and the load of the rolling roller during combined tillage were revealed. Mathematical dependences for tillers with various working bodies are obtained. Conclusion. Analyzing the results of experiments with rolling rollers on a combined tillage unit, it can be concluded that the spiral rolling roller for tillers provides better soil cultivation compared to other models.