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Influence of dimple textures on the tribological performances of tapered roller bearings under starved lubrication

Yueyong Wang (School of Mechanical Engineering, Shenyang University of Technology, Shenyang, China and Equipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang, China)
Yimin Zhang (School of Mechanical Engineering, Shenyang University of Technology, Shenyang, China and Equipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 30 September 2022

Issue publication date: 2 January 2023

42

Abstract

Purpose

The purpose of this paper is to study the influence of dimple textures on the friction and wear properties of tapered roller bearings (TRBs) with many pattern parameters, e.g. diameter, depth and area density under starved lubrication.

Design/methodology/approach

The pattern parameters include the dimple diameter (D; 60, 100 and 200 µm), dimple depth (H; 5, 10 and 20 µm) and area density (S; 6%, 12% and 24%). Dimples were fabricated on the outer ring (OR) of TRBs using a laser marking machine. The tribological properties of dimple-textured TRBs under starved lubrication were studied on a vertical universal friction wear tester with special friction pairs. The effect mechanisms of dimple textures on the tribological properties of TRBs are presented and summarized through experiments and discussions.

Findings

When dimple-textured TRBs revolve under starved lubrication, the average coefficients of friction (ACOF) and wear losses are markedly lower than those of non-textured bearings. S has the greatest influence on the COF curve. When D is 100 µm and S is 24%, the ACOF and wear losses are both lowest, i.e. 0.00426 and 0.51 mg, respectively. Under the same test conditions, compared with the non-textured group, its COF and wear loss decreased by 35.6% and 62.5%, respectively.

Originality/value

This work provides a useful reference for the research on the raceways of textured TRBs.

Keywords

Acknowledgements

The research was funded by the National Key R and D Program of China (No. 2019YFB2004400) and the Chinese National Natural Science Foundation (No.U1708254).

Citation

Wang, Y. and Zhang, Y. (2023), "Influence of dimple textures on the tribological performances of tapered roller bearings under starved lubrication", Industrial Lubrication and Tribology, Vol. 75 No. 1, pp. 42-50. https://doi.org/10.1108/ILT-05-2022-0153

Publisher

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Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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