Abstract
The subject of the article relates to agricultural machinery, namely, to the working units of root harvesting machines and to cutting device of harvesting machines. In both the first and second designs, work is performed in an abrasive medium, which reduces their service life and increases energy costs. The devices are proposed, in which the work is carried out in the absence of abrasive friction in the working parts. The novelty of devices is marked by patents for invention. The effect is achieved by the special arrangement of the geometric axes of the joints of the links, which are designed on needle roller bearings, by the simplicity of structures, by reduction of energy costs for the drive of the working units, by reliability and durability.
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