Factors of lubrication performance of Auto Central Bearing

Central bearing is the main support unit of mechanical equipment. It bears large loads during the work process. The quality of the operation performance of the central bearing will directly affect the quality of the system's power performance.Therefore, it is necessary to effectively predict the lubrication of central bearing. Because it can reduce intermediate bearing friction resistance, reduce the vibration and noise of the shaft system.Besides,also can improve the efficiency and reliability, reduce material wear and extend the service life.

The central bearing is mainly tolerance of the self -weight of the shaft, the deformation of the axis, and the radial load generated by the rotation.According to basic structure and the friction form of the contact part of the shaft.It is divided into two types:sliding bearings and rolling bearings. 

Factor1：journal speed-effect lubrication performance

When the speed is small, the thickness of the minimum oil membrane at the central bearing is small; as the journal increases, the thickness of the minimum oil membrane increases, showing an upward trend. Generally speaking, when the smallest membrane is thicker than HM> 3, it means that the central bearing has a better lubricating performance, which is in a state of full membrane fluid lubrication, that is, the lubricant film is full of the outer surface of the journal and the inner surface of the bearing. There was no contact.

Factor2:Temperature of Lubrication Oil

Lubricating oil attributes (viscosity, density, etc.) change with temperature changes, which in turn has a great impact on bearing lubrication performance. Therefore, the effects of different lubricating oil entrances on the bearing lubrication performance should be considered. If the journal speed does not change, the friction of the intermediate bearing decreases with the temperature of the lubricant entry. As a result, the power consumption decreases with the increase of temperature of the lubricating oil.

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