Research on lubrication and friction characteristics of oil seal with isosceles triangle texture and micro concave lip

Abstract

Purpose

This paper aims to study the effect of isosceles triangle micro concave texture with different parameters on the performance of oil seal to obtain a reasonable combination of parameters.

Design/methodology/approach

Based on the theory of elastohydrodynamic lubrication, a numerical model is established by coupling the texture parameters of isosceles triangle with concave lip with the two-dimensional average Reynolds equation considering surface roughness.

Findings

The results show that there is an optimal combination of parameters to improve the performance of the oil seal. When hp = 5µm-6.5 µm, a = 110°−130°, O = 1.4, C = 1.6 mm-2.2 mm, the oil seal with isosceles triangle micro concave texture can show good lubrication characteristics, friction characteristics and sealing ability.

Originality/value

The model provides a new idea for the design of new oil seal products and provides a theoretical support for the application of surface texture technology in the sealing field in the future.

Citation

Zhang, F. and Zhang, Y. (2022), "Research on lubrication and friction characteristics of oil seal with isosceles triangle texture and micro concave lip", Industrial Lubrication and Tribology, Vol. 74 No. 2, pp. 171-177. https://doi.org/10.1108/ILT-07-2021-0255