Determinação do carregamento dinâmico em mancais de esfera de contato angular

Radaelli, Gustavo Zarpelon; Dedini, Kátia Lucchesi Cavalca

doi:10.47749/t/unicamp.2013.905856

Cited by 1 publication

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“…The a iso factor presents the quantities that influence the life calculation of lubricated roller bearings. Load applied on roller bearing is F r , C ru is the fatigue limit load, K is the term associated an effectiveness of the lubricant layer shown in equations ( 29) and (31), and the fluid contamination parameter is e c :…”

Section: Rating Life For Cylindrical Roller Bearingmentioning

confidence: 99%

Optimized selection of fluid lubricant for cylindrical roller bearings under elastohydrodynamic lubrication

Soares

Tsuha

Cavalca

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Roller bearings are widely used in machinery. Keeping the contact surfaces of bearings properly lubricated strongly mitigates wear effects, improving bearing fatigue life. Therefore, systematically selecting the lubricant fluid that satisfies bearing operation conditions allows the lubricating layer to be able to carry the applied load, the operating temperature, and the roughness on contact. The nonlinear constrained optimization method is used for lubricant selection, seeking to find the fluid that best fits the bearing operation conditions. Roller bearing lubrication is characteristically elastohydrodynamic (EHL); namely, the Hertz theory describes the load applied on the contacts of a cylindrical roller bearing, and the Stribeck condition classifies the tribological condition of the surfaces in contact. This work concludes that roughness and speed are the most important parameters to consider when choosing a fluid lubricant.

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Section: Rating Life For Cylindrical Roller Bearingmentioning

confidence: 99%