lubrication lubrication
Mist lubrication system is that, in which the lubrication of a bearing is done by the oil in the form of oil mist.
The door hinge pins and bushings may be worn out, they can be replaced. Don't forget regular lubrication would help.
Mist lubrication system is that, in which the lubrication of a bearing is done by the oil in the form of oil mist.
KY Jelly can be used as a lubrication, and is available at drug stores.
The difference is that hydrodynamic lubrication requires the motion of the moving parts that are to be lubricated to pump the actual lubricant. Electrohydrodynamic lubrication involves electrically charged lubricants.
As a "train", there is no typical lubrication system, as it is not necessary. Individual components have grease systems and locomotive components include multiple lubrication systems. So, there is no single invention of a train lubrication system.
No lubrication is necessary under normal use.
To provide a film of lubrication between metal moving parts.
Pharmacy
lubrication
Yes sufficient lubrication is always necessary