Abstract
This paper consists in analysis of the contact stress and deformations appeared to the cylindrical rollers with variable center of gravity who equips large bearings, with finite elements method. Also it proposed an innovative model of lubrication system mounts in the hollow cylindrical rollers of the large bearings where it is stored the lubricant who is driven to the raceways through holes fitted with closing/opening systems made in the cover, controlled by a command system, monitoring and control, equipped with temperature sensors and wireless command. Elimination of lubricant, in stages, leads to changes in position of center of gravity of roller, thus to change its behavior in functioning. Comparison of deformations occurred in cylindrical rollers, solid, with hollowness, and with variable center of gravity, allow favorable conclusions, on the implementation of the proposed lubrication system.
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