Angular contact ball bearings mainly bear larger unidirectional axial loads. The larger the contact angle, the greater the load-bearing capacity. The material of the cage is steel plate, brass or engineering plastic, and the forming method is stamping or turning, depending on the bearing form or use conditions. There are other combined angular contact ball bearings, double row angular contact ball bearings and four-point contact ball bearings.
Angular contact ball bearings can bear radial load and axial load at the same time. It can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase. Single row angular contact ball bearings can only bear axial load in one direction. When bearing radial load, additional axial force will be caused. And it can only limit the axial displacement of the shaft or housing in one direction. If it is installed in pairs, the outer rings of a pair of bearings are opposite, that is, the wide end faces the wide end face, and the narrow end faces the narrow end face. In this way, additional axial force can be avoided, and the shaft or housing can be restricted to the axial clearance range in both directions. Angular contact ball bearings can bear radial load and axial load at the same time because of the relative displacement of the raceways of the inner and outer rings on the horizontal axis—combined load (single row angular contact ball bearings can only bear axial load in one direction, Therefore, paired installations are often used). The material of the cage is brass, synthetic resin, etc., which are differentiated according to the type of bearing and the conditions of use. Type 7000C (∝=15°), type 7000AC (∝=25°) and 7000B (∝=40°) have the lock on the outer ring. Generally, the inner and outer rings cannot be separated and can bear radial and axial directions. The combined load and the axial load in one direction. The ability to withstand the axial load is determined by the contact angle. The larger the contact angle, the higher the ability to withstand the axial load. This kind of bearing can limit the axial displacement of the shaft or housing in one direction.
l Single row: 78XX, 79XX, 70XX, 72XX, 73XX, 74XX 2 Mini: 70X 3 Double rows: 52XX, 53XX, 32XX, 33XX, LD57, LD58 4 Four-point contact: QJ2XX, QJ3XX
