Rolling bearings are widely used in industrial production, and are the basic supporting parts of mechanical equipment. The role of rolling bearings is to transform the sliding friction between the shaft and the shaft seat into rolling friction. During the operation of rolling bearings, rolling friction will cause heating and wear of bearings. In order to reduce friction and damage, rolling bearings need to be lubricated during operation. Q. What lubrication mode can rolling bearings adopt A.1, greasy lubrication 2 and greasy lubrication 1? Grease lubrication rolling bearings adopt grease as lubrication medium. Its advantages are that the fluidity of grease is small, it is not easy to leak, the strength of oil film formed is good, and it is more conducive to the sealing use of rolling bearings. At the same time, the use of grease lubrication in rolling bearings can also prolong the lubrication maintenance time, making the maintenance of bearings more simple.
Compared with lubricating oil, the friction moment of rolling bearings is larger, and the applicability of lubricating grease to high-speed rolling bearings is lower. In addition, the cooling performance of grease lubrication is poor. If the grease is added too much in the rolling bearing, the rolling bearing will be overheated due to stirring lubricant. 2. Oil-lubricated rolling bearings of rolling bearings are lubricated by oil lubrication, which can achieve good cooling and cooling effect, especially for rolling bearings with high working temperature. The viscosity of lubricating oil used in rolling bearings is between 0.12 and 0.2 cm/s. If the load of rolling bearings is high and the working temperature is high, the lubricating oil with high viscosity will be chosen. The lubricating oil with fast rotating speed is suitable for the lubricating oil with low viscosity. The disadvantage of using oil lubrication in rolling bearings is that oil lubrication requires that bearings must keep good sealing condition to avoid oil leakage. In addition, oil lubrication needs to set up more complex oil supply device, which is less convenient than grease in operation and use, and increases the maintenance workload of rolling bearings.
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