How to choose the size of angular contact ball bearing

How to select the size of angular contact ball bearing is based on the size of the shaft: in mechanical design, the size of the shaft is generally determined first, then the appropriate bearing is selected according to the size of the shaft, and the specific selection is based on the required speed and bearing capacity of the equipment. The bore size of the bearing has been limited during production, so we should refer to the matching degree of the bore size of the bearing and the internal structure of the machine and equipment when selecting, and consider the speed required by the equipment. The larger the contact angle of the six types of bearings, the higher the axial bearing capacity. The contact angle is the angle between the line connecting the contact point of the ball and the raceway in the radial plane and the vertical line of the bearing axis. The contact angle of high-precision and high-speed bearings is usually 15 degrees. Before determining the bearing size, it is necessary to calculate and compare its actual load capacity, and consider the working life, static load safety factor and economy after meeting the working requirements of the equipment. The safety factor of excessive plastic deformation of the raceway and rolling element is calculated. Most bearings are subject to dynamic load, and the inner and outer rings are in relative motion.