|WikiProject Chemistry||(Rated Start-class, Low-importance)|
|WikiProject Technology||(Rated C-class)|
Describing the invention of ball bearings as "revolutionary" seems a bit ridiculous, but I can't think of a better term. --user:Heron
In the section named "Keep moving parts apart", there is an incomplete sentence:
"This is termed hydrodynamic lubrication. In cases of high surface pressures or temperatures the fluid film is much thinner and some of the forces are transmitted between the surfaces through"
I don't think that really interesting stuff for none USR people. I think it is. They have a really kick-ass song that is usually passed as "Rammstein – Juden Hasst". Even though Rammstein has nothing to do with it. --18.104.22.168 10:17, 13 September 2005 (UTC) If you think it should be mentioned it should be dealt with like a redirect, personally I disagree. Darkwraith 19:50, 26 June 2006 (UTC)
Lubricants as pollutants
"In developed nations, lubricants contribute to nearly 1/4 of total pollution released to environment." That can't be right. We need a source or clarification of that statment.
Carax 16:13, 23 July 2005 (UTC)
Grease isn't a liquid ?
It looks like one to me, at least at high temps. StuRat 05:11, 9 August 2005 (UTC)
- Like many materials, grease melts when hot and freezes when cold. But at room temperature grease is a thixotropic power-law fluid. See: Grease (lubricant). —Ryanrs 12:06, 17 February 2006 (UTC)
I've put a cleanup tag on the article. It particularly refers to the intoductory section, which needs a complete rewrite as it contains several errors.
The lubricant may form a dispersion, disperses some wear products originating from the contacting surfaces, but does not dissolve much of them, although it might dissolve some.
Vaseline is cited as a tyical petroleum based lubricant. It is stated, that it dissolves petroleum products: rubber is a natural product, comes from the rubber tree. Petroleum based lubricants are designed such that their interaction with rubber/plastic seals is minimal.
What do we mean by a water based lubricant? These are cited as dissolving dirt: what dirt? inorganic contaminants, such as abrasive atmospheric dust, mainly silicates and aluminates do not dissolve in water.
Lubricants do not necessarily interact chemically with the contacting surfaces: in hydrodynamic lubrication the viscosity of the lubricant is capable of keeping the moving surfaces apart.
The statement "The lubricant must be replaced when it has dissolved to saturation" does not make sense. As very little solution takes place there is no saturation: Lubricating oils are replaced when there are too much abrasive contaminants in them, or as in the case of motor oils when the oil, through oxidation looses its ability to lubricate, because its Viscosity Index has dropped significantly and some of its components have partially dehydrogenated/oxidised and created coke particles which abrade instead of lubricating.
The reference section is a total disaster. Who put those in there, and what part of the article do they relate to? They are numbered like footnotes, but I can't find what they relate to. --THE FOUNDERS INTENT PRAISE 14:05, 6 August 2008 (UTC)
Lubricants are supposed to help in the reduction of friction between particles during compression and between the compressed tablet and die wall during the ejection cycle.Lubricants also increase the density of particle bed before compression and equalise the is distribution in the compressed tablets. —Preceding unsigned comment added by 22.214.171.124 (talk) 19:03, 3 February 2010 (UTC)