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Abstract

The lubrication of angular contact ball bearings under high-speed motion conditions is particularly important to the working performance of rolling bearings. Combining the contact characteristics of fluid domain and solid domain, a lubrication calculation model for angular contact ball bearings is established based on the RNG k-ε method. The pressure and velocity characteristics of the bearing basin under the conditions of rotational speed, number of balls and lubricant parameters are analyzed, and the lubrication conditions and dynamics of the angular contact ball bearings under different working conditions are obtained. The results show that the lubricant film pressure will rise with increasing speed and viscosity of the lubricant. The number of balls affects the pressure and velocity distribution of the flow field inside the bearing but has a small effect on the values of the characteristic parameters of the bearing flow field. The established CFD model provides a new approach to study the effect of fluid flow on bearing performance in angular contact ball bearings.
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Bibliography

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[2] H. Bao, X. Hou, X. Tang, and F. Lu. Analysis of temperature field and convection heat transfer of oil-air two-phase flow for ball bearing with under-race lubrication. Industrial Lubrication and Tribology, 73(5):817–821, 2021. doi: 10.1108/ilt-03-2021-0067/v2/decision1.
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[8] W. Zhou, Y. Wang, G. Wu, B. Gao, and W. Zhang. Research on the lubricated characteristics of journal bearing based on finite element method and mixed method. Ain Shams Engineering Journal, 13(4):101638, 2022. doi: 10.1016/j.asej.2021.11.007.
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Authors and Affiliations

Bowen Jiao
1
ORCID: ORCID
Qiang Bian
1
ORCID: ORCID
Xinghong Wang
1
Chunjiang Zhao
1
ORCID: ORCID
Ming Chen
1
Xiangyun Zhang
2

  1. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, China
  2. Luoyang Bearing Research Institute Co., Ltd, Luoyang, China
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Abstract

Optimum values of preload can be achieved in well-tried constructions and then applied in similar structures. For new structures, it is recommended to calculate the preload force and to test the correctness of calculation by means of experiments. In practice it may be necessary to introduce corrections, because not all real work parameters can be precisely known. Credibility of calculations depends, first of all, on the consistence between the assumptions concerning temperature conditions during work and elastic deformations of cooperating elements – first of all of a holder – and the real work conditions. The aim of the study is to determine how preload influences the work of a system of angular ball bearings, in relation to durability of bearing, moment of friction and rigidity of the bearing.

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Authors and Affiliations

Jarosław Kaczor
Andrzej Raczyński

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