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The lubricants can be liquid as oil, pasty as grease or solid like graphite.

They fight wear by decreasing the contacts between the asperities and by creating a phenomenon of bearing pressure around the asperities by their viscous character. .

They reduce friction and decrease the power consumption and thus improve the energy efficiency

They drain the calories

They convey the remains of grinding or wear out of the rubbing zone

They generally contribute to the improvement of the sealing.

Explanation of lubrication; extracted from a book of the School of the Mines of Paris (famous French engineering school) of 1910.

définition of the greasing type of grease friction
132_graisseur_b.JPG (67144 octets) 133_graisseur_b.JPG (92600 octets) 134_graisse_b.JPG (67110 octets)

 acess to defect of lubrication

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