When the bearing is subjected to lateral force, it will produce overturning moment. If the overturning moment of the bearing is too large, it will lead to the overturning failure of the bearing, and then affect the operation of the whole mechanical system. Therefore, when designing and selecting bearings, it is necessary to consider the overturning moment of bearings and choose bearings with smaller overturning moment to ensure the normal operation of mechanical systems. However, it should be noted that the overturning moment of the bearing is related to the accuracy, structure, material and other factors of the bearing, and it is necessary to determine the appropriate bearing type and specification according to the specific use conditions and requirements.