Angular contact ball bearings can bear both radial and axial loads. It can work at high speed. The larger the contact angle, the higher the axial bearing capacity. The contact angle is the angle between the contact point line between the ball and 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. Under the action of axial force, the contact angle will increase.

There are raceways on the inner and outer rings of angular contact ball bearings, and the inner and outer rings can make relative displacement along the axial direction of the bearing. This kind of bearing is especially suitable for bearing composite load, that is, the load acting on both radial and axial direction simultaneously. The axial load bearing capacity of angular contact ball bearing increases with the increase of contact angle α. The contact angle is the angle between the contact point line between the ball and raceway in the radial plane and the vertical line of the bearing axis.

The models of angular contact ball bearings are divided into: α = 15 ° angular contact ball bearings (70000C type); α = 25 ° angular contact ball bearings (70000 AC type); α = 40 ° angular contact ball bearings (70000 b); back to back double angular contact ball bearings [70000C (AC, B) / DB type]; face to face double angular contact ball bearings [70000C (AC, b) / DF type]; series paired double angular contact ball bearings [70000C (AC, b) / dt type]; Double row angular contact ball bearing with ball gap (type 00000); double row angular contact ball bearing without ball bearing gap (type 00000a); double row angular contact ball bearing with dust cover on one side without ball bearing gap (type 00000a-z); double row angular contact ball bearing with dust cover on both sides (type 00000a-2z); double row angular contact ball bearing without ball bearing gap and with sealing ring on one side (type 00000as); There are 13 kinds of double row angular contact ball bearings (type 00000a-2rs) without ball gap and sealing rings on both sides, and four point angular contact ball bearings (qj0000 type).