The angular contact ball bearings can undertake both the radial load and axial load in the mean-time. Such bearings can work at a high rotational speed. The bigger the touching angle is, the greater the bearing's load capacity is.
Single row angular contact ball bearings can only bear axial load in one direction, when bearing radial load, will cause additional axial force. And can only limit the axial displacement of the shaft or shell in one direction.
