Abstract
At present, it is necessary to improve not only repair technologies, but also consider the possibility of using various modified materials to increase the post-repair reliability of agricultural machinery. One of the ways to improve the rubber seals of bearing assemblies is to modify them by adding organofluorine compounds to the rubber composition, which have a complex effect on rubber, improve its physical, mechanical, and tribological properties. To determine the modification effect of seals on friction and wear, the author tested joints consisting of a steel bushing with a diameter of 45 mm with a surface hardness of at least HRC32 and collars of three types: serial (GOST 8752-79); modified with alcohol-telomer (FS-1) and fluoroparaffin (FS-2) in the amount of one mass part of PS per 100 mass parts of rubber. The collar wear was determined by changing the width of the working edge, measured by DIP-6 with the optoelectronic measuring system NIIK-890. Bench tests showed that volumetric modification with organofluorine compounds improved the properties of rubber: the wear of modified seals decreased in 1.83…1.94 times compared to serial ones, friction coefficient decreased in 1.32…1.37 times
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