Analysis of Elastohydrodynamic Lubrication for Steel-polymer Spur Gear Pairs
Zhou Jia'ao
Liu Xiaoling
Li Qun
Zhang Zheng
Abstract：Polymer gears have the advantages of good self-lubrication and low production cost.Polymer gears are susceptible to pitting failure in transmission due to load,lubrication,etc.Metal-polymer gears'pairs have a longer service life than polymer-polymer gear pairs.To investigate the performance of elastohydrodynam-ic lubrication for metal-polymer gear pairs under lubrication condition,analysis of elastohydrodynamic lubrica-tion is carried out for steel-polymer gear pairs under different working conditions,and the lubrication status and micro-pitting failure are determined by film thickness ratios and oil film safety factors.The results show that steel-polyoxymethylene(POM)gears'pairs can form stable lubricant film under oil lubrication,and the pressure angle,the rotational speed,the load and the viscosity can affect the lubrication state of gears.Therefore,the ef-fects of pressure angle,rotational speed,load and lubricant viscosity need to be considered to avoid pitting failure.
Keywords：Elastohydrodynamic lubricationPolymer gearMicro-pitting
Publication Date：2024-07-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 114-120 )