The ability of angular contact ball bearings to withstand axial loads:

The ability of angular contact ball bearings to withstand axial loads mainly depends on the size of the contact angle, which refers to the angle between the line connecting the contact point of the ball and the raceway in the radial plane and the perpendicular line of the bearing axis. The larger the contact angle, the stronger the axial load capacity that the bearing can bear. This is because as the contact angle increases, the contact area between the rolling element and the raceway increases, providing stronger axial support force. ‌

Factors affecting the axial load bearing capacity of angular contact ball bearings:

Contact angle: Contact angle is the main factor determining the axial load-bearing capacity of bearings. Usually, high-precision and high-speed bearings adopt a contact angle of 15 ° to ensure sufficient axial load-bearing capacity while maintaining high rotational speed. In special applications, such as heavy load conditions, larger contact angles, such as 25 ° or 40 °, may be chosen to improve the axial load capacity of the bearing.

Structural design: Single row angular contact ball bearings typically can only withstand axial loads in a single direction, resulting in additional axial forces when subjected to radial loads. To balance this force, single row angular contact ball bearings usually need to be installed in pairs and can be configured in various ways such as back-to-back, face-to-face, or series. Double row angular contact ball bearings have stronger load-bearing capacity and can simultaneously withstand larger radial and axial combined loads.

Material selection and processing accuracy: High quality bearing materials such as high carbon chromium bearing steel have high hardness and wear resistance, and can withstand large loads without being easily damaged. Precision machining technology can ensure the dimensional accuracy and surface quality of bearings, further improving their load-bearing capacity and service life.

Lubrication and sealing: Good lubrication and sealing can reduce friction and wear between rolling elements and raceways, reduce heat generation, thereby protecting bearings and extending their service life.

Reasons for the generation of derived axial force:

Installation error and load eccentricity: Errors in the manufacturing and installation process of machine equipment, such as non parallelism between the axis and the support surface, incorrect bearing installation angle, etc., can cause the inner and outer rings of the bearing to tilt when subjected to load, resulting in additional axial force.

Liquid dynamics and impeller effect: In mechanical systems involving liquid flow, such as multi-stage centrifugal pumps, liquid dynamics can cause derived axial forces. The asymmetric pressure distribution on the outer surface of the front and rear cover plates of the impeller, as well as the change in the flow direction of the liquid passing through the impeller, will generate dynamic reaction forces, which are manifested in the form of axial forces on the bearing.

Friction between inner and outer rings: During the operation of a bearing, the friction between the inner and outer rings may be asymmetric, which can be converted into axial force and affect the normal operation of the bearing. Especially under high-speed operation and high load conditions, the influence of friction is more significant.