Knowledge Lecture: Bearing Lubrication Purpose of Bearing Lubrication: The purpose of lubrication of rolling bearings is to reduce internal friction and wear of the bearings, prevent sticking, and their lubricating effect is as follows. (1) Reduce friction and wear. The contact parts of the rings, rolling elements and retainers constituting the bearing prevent metal contact and reduce friction and wear. (2) Extend the fatigue life. The rolling fatigue life of the bearing is prolonged when the rolling contact surface is well lubricated during rotation. On the contrary, the viscosity of the oil is low, and the thickness of the lubricating oil film is not good, so it is shortened (3) Discharge frictional heat and cooling. The cyclic oil feeding method or the like can use oil to discharge heat generated by friction or heat transferred from the outside to cool. Prevent the bearing from overheating and prevent the lubricating oil from aging. (4) Others also have the effect of preventing foreign materials from intruding into the bearing or preventing rust and corrosion. Lubrication method: The bearing lubrication method is divided into grease lubrication and oil lubrication. To make the bearing function well, first, select the lubrication method that suits the conditions of use and purpose of use. If only lubrication is considered, the lubricity of oil lubrication prevails. However, grease lubrication has the advantage of simplifying the structure around the bearing, comparing the advantages and disadvantages of grease lubrication and oil lubrication.
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