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The difference between bearing grease lubrication and oil lu
Source:未知|Popularity:0|release date:2020-12-03 15:22:45
Rolling bearings are widely used in industrial production and are the basic accessory parts of mechanical equipment. The function of the rolling bearing is to convert the sliding friction between the shaft and the shaft seat into rolling friction. During the operation of the rolling bearing, the rolling friction will cause the bearing to heat up and wear. In order to reduce friction and damage, the rolling bearing needs to be lubricated during operation.
Comparison of lubrication methods of rolling bearings
1). Grease lubrication
Rolling bearings use lubricating grease as the lubricating medium. Its advantages are that the grease has low fluidity, is not easy to leak, and the formed oil film has good strength, which is more conducive to the sealing use of rolling bearings. At the same time, the use of grease lubrication for rolling bearings can extend the lubrication maintenance time, making bearing maintenance easier.
Rolling bearings are lubricated with grease also have shortcomings. Compared with lubricating oil, grease has a larger frictional torque and is less applicable to rolling bearings that require high-speed operation. In addition, the grease lubrication method has poor cooling performance. If too much grease is added to the rolling bearing, the rolling bearing will overheat due to the stirring of the lubricant.
2. Oil lubrication
Rolling bearings are lubricated by oil lubrication, which can achieve good cooling and cooling effects, and is especially suitable for rolling bearings with relatively high operating temperatures. The viscosity of the lubricating oil used in rolling bearings is about 0.12 to 0.2cm/s. If the load of the rolling bearing is high and the working temperature is high, the high viscosity lubricating oil should be selected, and the rolling bearing with fast speed is suitable for the low viscosity lubricating oil.
The disadvantage of using oil lubrication for rolling bearings is that oil lubrication requires the bearings to maintain a good sealing condition to avoid leakage of lubricating oil. In addition, oil lubrication requires a more complicated oil supply device, which is not as convenient as grease in operation and use, which increases the maintenance workload of rolling bearings.