Ideal properties of a good bearings lubricant are:
It should have moderate bearing loads.
It should improved heat transfer behavior.
It should have good corrosion protection properties.
It should give rise to low friction.
Soluble for high speed fluid film hydrodynamic lubrication, hence, low viscosity with reduced oil film friction.
It should carry away as much heat from the surface as possible.
It should have antifoaming ability.
It should adhere to the surface and reduce the wear.
It should have good high temperature viscosity.
It should have thermal and oxidative stability.
It should have good thermal durability.
It should have good low temperature viscosity.
It should have good cleaning effect on the surface.
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