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Stability characteristics of lubricating film in mill oil-film bearings

Jianmei Wang (School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, China)
Zhixiong Li (School of Mechatronics Engineering, China University of Mining and Technology, Xuzhou, China, and School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Australia)
Sadoughi Mohammadkazem (Department of Mechanical Engineering, Iowa State University, Ames, Iowa, USA)
Min Cai (School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, China)
Jianfeng Kang (School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, China)
Yanan Zhang (School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 8 January 2018

181

Abstract

Purpose

The stability characteristics of an oil film directly influence the safety and service life of mill oil-film bearings. However, very limited work has been done to address the stability characteristics of mill oil-film bearings. To this end, this paper aims to investigate the stability characteristics of mill oil-film bearings through theoretical and experimental analysis.

Design/methodology/approach

For the first time, a special designed experiment platform was developed to investigate the stability characteristics of mill oil-film bearings. In addition, a theoretical model of lubricating film of the tested bearings was established to analyze the oil-film stability. The theoretical results were compared with the experimental results.

Findings

The comparison results demonstrate that the critical influential factors on the bearing stability were the eccentricity ratio and the ratio of bearing length to diameter. The mill bearing was likely to be unstable under a small load and at a high rotational speed.

Practical implications

The paper includes implications for suitable operation conditions in practical use of mill oil-film bearings.

Originality/value

This paper fulfills an identified need to investigate oil-film stability of mill bearings for practical applications.

Keywords

Acknowledgements

This work was sponsored by Shanxi Provincial Natural Science Foundation of China (No. 201601D011049), Shanxi Province special patent to promote implementation of China (No. 20161005), Shanxi Provincial Key Research and Development Project (No. 201603D111017), National Science Foundation of China (No. U1610109 and 51505475), UOW VC Postdoctoral Fellowship and Priority Academic Program Development of Jiangsu Higher Education Institutions.

Citation

Wang, J., Li, Z., Mohammadkazem, S., Cai, M., Kang, J. and Zhang, Y. (2018), "Stability characteristics of lubricating film in mill oil-film bearings", Industrial Lubrication and Tribology, Vol. 70 No. 1, pp. 201-211. https://doi.org/10.1108/ILT-12-2016-0318

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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