Angular contact ball bearing can withstand both radial and axial loads. It can work at a higher speed. The larger the contact angle is, the higher the axial bearing capacity is. The contact angle is the angle between the contact point of the ball and raceway in the radial plane and the vertical line of the bearing axis. High precision and high speed bearing usually have a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase.
Single row angular contact ball bearing can only withstand one direction of axial load, while withstanding radial load, it will cause additional axial force. It can only limit the axial displacement of the shaft or housing in one direction. The contact angle of angular contact ball bearing is 40 degrees, so it can bear a large axial load. Angular contact ball bearing is a non-separable design, and the shoulders on both sides of the inner and outer rings vary in height. In order to improve the load capacity of the bearing, the shoulder of one side of the bearing will be processed lower, so that the bearing can be loaded with more steel balls.
Double row angular contact ball bearing can withstand combined radial and axial loads and moment loads, which are mainly radial loads, and limit the axial displacement of both sides of the shaft. The inclinability between inner and outer rings of double row angular contact ball bearing is limited, and the allowable inclination angle depends on the internal clearance, bearing size, internal design and force and moment acting on the bearing. The maximum allowable inclination angle should ensure that no excessive additional stress is generated in the bearing. If there is an inclination angle between the inner and outer rings of the bearing, the service life of the bearing will be affected. At the same time, the accuracy of the bearing will be reduced and the noise of the bearing will be increased. Double row angular contact ball bearing generally use nylon cage or brass solid cage. When installing double row angular contact ball bearing, it should be noted that, although bearing can bear bidirectional axial loads, when there is a filling gap on one side, the main axial loads should not be allowed to pass through the groove edge on the side with the gap. When bearing is used, attention should be paid to the main load on one side of raceway without ball gap.