Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings
Abstract
Purpose
The purpose of this paper is to study the impact of different types of textures on the friction lubrication performance of cylindrical roller bearings.
Design/methodology/approach
In the present study, the composite texture hydrodynamic lubrication model that takes into account the effects of surface roughness is established, and the Reynolds equation for the oil film is numerically solved using the finite difference method. The study investigates the oil film carrying capacity and maximum pressure of bearings under two different arrangements of four composite textures and conducts a comparative analysis of the oil film characteristics under various texture parameters and surface roughness levels.
Findings
When the roughness of the inner texture surface and the contact surface are equal, the bearing capacity of the composite texture is intermediate between the two textures. The impact trend of surface roughness on fluid dynamic pressure effects varies with the type of composite texture; the internal roughness of the texture affects the micro-hydrodynamic pressure action. Composite textures with different depths exhibit improved bearing capacities; elliptical cylindrical parallel and elliptical hemispherical parallel textures perform better when their area densities are similar, while other types of composite textures show enhanced bearing performance as the ratio of their area densities increases.
Originality/value
This paper contributes to the theoretical investigations and analyses on designing the textured rolling bearings with high lubrication performance.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2024-0050
Keywords
Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No. 62241308) and the Key Program of Natural Science Foundation of Gansu Province (Grant No. 23JRRA761). The authors would like to sincerely thank the anonymous reviewers for their constructive suggestions and comments on this paper.
Citation
Deng, L., Su, J. and Jin, Z. (2024), "Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings", Industrial Lubrication and Tribology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/ILT-02-2024-0050
Publisher
:Emerald Publishing Limited
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