Things You Should Know About Marine Lube Oil System


Every machinery or engine aboard ships and other marine vessels require proper lubrication for trouble-free operation. It takes knowing about the marine lube oil system before you choose the proper products that will keep engine parts properly lubricated and running smoothly. For instance, the main engine’s lubrication is essential for cooling and lubricating the internal parts, which work relative to one another in generating heat and friction. Without proper lubrication, those parts will be prone to overheating. Besides cooling the parts, lubrication also works to remove impurities and debris.

There are different marine lube oil systems used in marine applications. Here is what you should know about them:

  • Hydrostatic lubrication – When oil film is unable to form because of dynamic moving parts, oil pressure must be externally provided. This is where the marine lube oil system is considered hydrostatic. Slow heavy parts, for instance, move in a way that makes self-generated lubrication difficult, so they need an external pump to deliver the oil to their system. Crosshead bearings are usually designed with an additional crosshead lube pump.

  • Hydrodynamic lubrication – In this lubrication oil system, the oil forms a continuous film that is adequately thick and moves between surfaces. The film is generated as the parts move and generate their own pressure. The main engine bearings are perfect examples of this lubrication.

  • Elastohydrodynamic lubrication – This time, the thickness of the lubricating film changes considerably with the surfaces’ elastic deformation. This can be seen when sliding or rolling surfaces come into contact with one another when meshing gear teeth or rolling contact bearings. Elastic deformation of metals happens, causing more pressure on the lube.

  • Boundary lubrication – For this marine lube oil system, a thin film forms between two surfaces rubbing against each other. Boundary lubrication is applied and effective due to the slow speeds, rough surfaces, and high contact pressure.
Source:- https://petrogulfmarine.com/things-you-should-know-about-marine-lube-oil-system

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