How to choose the size of angular contact ball bearings

How to choose the size of angular contact ball bearings? Choose according to the size of the shaft: When designing a machine, the size of the shaft is generally determined first, and then the appropriate bearing is selected according to the size of the shaft. The specific selection is based on the speed and load-bearing capacity required by the equipment. The inner hole size of the bearing is already limited during production. For this reason, we should refer to the matching degree of the inner hole 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 load-bearing capacity.
The contact angle is the angle between the line connecting the contact points of the ball and the raceway in the radial plane and the vertical line of the bearing axis. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Before the bearing size is determined, its actual load capacity needs to be calculated and compared. After meeting the working requirements of the equipment, the working life, static load safety factor and economy are considered. Calculate the safety factor of excessive plastic deformation of the raceway and rolling element. Most bearings are subjected to dynamic loads, and the inner and outer rings move relative to each other. The size calculation verifies the safety factor of early fatigue damage of the raceway and rolling element.
The measurement of angular contact ball bearings is generally in millimeters. Observe the diameter of the outer spherical bearing from its annular side. Diameter (mm) is the diameter of the central hole in the bearing, measured in millimeters, as determined by measuring the width of a circle along a line through its center. This will ensure that the replacement bearing fits onto the shaft.