In this paper SKF presents an engineering model for theprediction of radial lip seal friction based on a physicalapproach. The friction model includes the generation of frictiondue to rubber dynamic deformation and lubricant viscous shearbetween the surfaces of a seal and a shaft. The friction model iscoupled with a heat generation and seal thermal model. Indeed, sealfriction and seal temperature are closely related: the heatgenerated in the sealing lip is conducted through the seal andshaft and dissipated into the environment. This changes forinstance the lubricant viscosity. The model is verified step bystep in an extensive experimental study. Measurements of sealfriction, seal temperature and lubricant film thickness have beenperformed for various dynamic lip seals. The analyzed parametersare: surface speed, oil viscosity, seal material, seal size, seallip style and duty cycles. The correlation between modelpredictions and experimental friction measurements can therefore beverified.
- Edition:
- 14
- Published:
- 10/01/2014
- Number of Pages:
- 12
- File Size:
- 1 file , 740 KB
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