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saurabhjain

Which is the best lubricant-air, oil or water?

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I think a magnetic field would be the best.

But I remember reading the ice ( frozen watee ), had superior lubrication properties. Steel on ice is very slippery, and can be self-regenerating

Edited by Timothy L Dennison
Autocorrect used the wrong word

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Well there is no such "best lubricant", I guess. But there is always the best solution for the system that you are working on . Obviously you can't use water ot grafpite to lubricate a CD player. And you can't use  magnetic field  to lubricate a turbo jet either . It's all matter of compatibility, and a little bit of engineering ;) ,


 

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Universal solvent ,water can be used as lubricant when compared to oil..because  some oils damages the operating system like cutting tool and (due to chemical reaction takes place between them leads to corrosion...... some times metal diffusion may takes place )etc...water is less economical  and esaily available ..now adays people are using wateremulsifierst to get a desirable properties like non-corrosive ness,viscocity, high heattransfercofficient through it etc....Thease  may be the some reasons universal solvent is used as lubricant in many industries 

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Different lubricants are  used in different type of application.For example,an industrial fan can be fitted with an anti friction bearing,or a bush bearing  which might be lubricated with oil or grease depending upon various factors viz load,RPM,temperature,environmental consideration but surely lubricant like graphite powder or air or viscolite can not be used.Similarly for a large multistage submersible water pumps grease can not be used in place of water as  lubricant.An aerofoil bearing used for very high speed machines,oil can not be used in place of air.An elevator  conveying pulverized material uses conveying material as lubricant for its bottom drum bearing.. 

In a nut cell,different lubricants are for different uses and can not be used in place of one another against recommendations  by machine designers.

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