What is the reason for the life of the automobile water pump bearing and the load it bears?

What is the reason for the life of the automobile water pump bearing and the load it bears?

The life of the automobile water pump bearing is closely related to the load it bears, and the size of the load is related to the unbalance of the rotating component. How to accurately calculate the load and life under the condition of the unbalance is one of the current difficulties. The calculation model of bearing load and life of the water pump considering the unbalance of the component eccentricity is established. Taking the WR3258152 automobile water pump bearing as the research object, the influence of the eccentricity of the fan and pulley on the equivalent dynamic load and life of the automobile water pump bearing is studied. The calculation results show that the eccentric imbalance of the fan and the pulley will cause large fluctuations in the radial load of the two rows of rolling elements of the automobile water pump bearing, and the calculated life of the bearing will also decrease according to a certain rule due to the change of the eccentric imbalance of the fan and the pulley.