Brief Introduction to Type Size Specification of Double-row Angular Contact Ball Bearing

When installing double row angular contact ball bearings, it should be noted that, although bearings can bear bidirectional axial loads, if there is a ball filling gap on one side, it should be careful not to let the main axial loads 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 filling gap.

Single row angular contact ball bearings 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 bearings 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. It is mainly used to limit the two-way axial displacement of axle and shell, which can bear 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. High precision and high speed bearings usually have a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase.

The inclinability between inner and outer rings of double row angular contact ball bearings is limited. 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