Influence of lubrication on endurance of rolling contacts
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Influence of lubrication on endurance of rolling contacts

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Published .
Written in English


Book details:

Edition Notes

StatementN.E.Sindlinger et al.
SeriesAD 276 537
ID Numbers
Open LibraryOL19299850M

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  Resupply, under starved conditions, will thus depend on both operating conditions and grease parameters. The aim of this paper is to evaluate the influence of these parameters on starved lubrication in a rolling contact. Starved film thickness has been measured for a series of greases and the results have been compared to the fully flooded by:   P.M. Cann () Starved Grease Lubrication of Rolling Contacts, Tribology Transactions, , , DOI: / Fully flooded film thickness for a grease. Share this.   Rolling contact wear (RCW) is a particular type of wear that results from the repeated mechanical stressing of the surface of a loaded body rolling against another. To improve RCW life, lubrication is often employed. The contacting surfaces are separated by a lubricant film that aims to keep them sufficiently apart to prevent asperity by: John Wiley Sons, Ltd., p. ISBN: Tribology in Practice Series. The definitive book on the science of grease lubrication for roller and needle bearings in industrial and vehicle engineering. Grease Lubrication in Rolling Bearings provides an overview of the existing.

  Fatigue life tests were conducted on these rolling elements, whose skewness ranged from − to −, under mixed or boundary lubrication conditions. Test results showed rolling bearing fatigue life to increase with a decrease in skewness as related to the depth, width, and distribution of the surface indentations, or pits, on the parts.   Greased rolling bearings often operate in starved lubrication conditions, although these depend on operating, design and grease composition factors. In order to eliminate this critical variable, which greatly affects the repeatability of laboratory experiments, the tests described in this work were carried out in fully flooded conditions. The results also show that the influence of spin motion is only significant at fairly high values of angular velocity and in the absence of a rolling/sliding motion. Full article (This article belongs to the Special Issue In Commemoration of Professor Duncan Dowson: Tribology: Hydrodynamics, Elastohydrodynamics and Biotribology). Influence of elastic modulus on the lubrication of point contacts". (). Institution of Mechanical Engineers, Lubrication and Wear Group Convention, paper 4.

The lubrication of nonsmooth surfaces is a transient two-dimensional problem, which will be treated without any geometrical simplification. More precisely, this paper focuses on the influence of rolling speed and the slide-to-roll ratio on the film thickness separating a smooth surface and one with transverse waviness. “The Influence of Crack Face Friction and Trapped Fluid on Surface-initiated Rolling Contact Fatigue Cracks.” Transactions of the ASME, Journal of Technology, Vol. , p. Cheng, H., Keer, L. and Mura, T. “Analytical Modelling of Surface Pitting in Simulated Gear Teeth Contacts,” SAE Technical Paper No. , p. components, their rheology and apparent viscosity, the rolling bearings internal geometry and functioning conditions having important influences in time [6, 7]. When considering greases in rolling bearings heavy loaded contacts lubrication EHD conditions are obtained the pressure distribution being similar with that for oil lubrication regimes. 3. As the type of bearing rolling element changes, what is the effect on the required viscosity for high speed lubrication? 4. What are the mechanisms that allow “EP” additives to reduce component wear? 5. What effect would solid “EP” additives have on rolling element bearings running at rpm? 6.