Generally, the preload is a parameter provided by the bearing factory. However, in the actual assembly process, it is not possible to measure whether the preload meets the requirements. Traditionally, the assembly workers are often installed by experience.
In some structures, the method of measuring the amount of preload deformation in advance can be used. For example, a radial thrust bearing with a preload of 20kg. We can put the outer ring of the bearing on the platform, and then apply 20kg force to the inner ring. Measure the change in height difference between the inner and outer rings before and after the force is applied, which can generally be measured by a lever dial indicator. After the deformation amount is obtained, a gasket is designed in the preload structure, and the height difference of the gasket is exactly the amount of change before and after the preload. In this way, it is ensured that after the nut is tightened, the preload remains unchanged. Change the previous assembly method by the labor force of the workers, the integral bearing assembly
When lubricating bearings, the more grease the better? When lubricating bearings, the more grease the better, this is a common misconception. Excessive grease in the bearing and bearing chamber will cause excessive agitation of the grease, resulting in extremely high temperatures.
The adjustment and pre-tightening process of rolling bearing clearance is an effective means to improve the bearing rotation accuracy and bearing capacity, and reduce the vibration and noise of the transmission system. In the assembly work, the concept should be clarified, the technical requirements of bearing assembly should be clarified, and at the same time, the control of bearing temperature rise and the maintenance of good lubrication should be taken into account. The correct application of this process method can ensure the quality of rolling bearing assembly.