The outer spherical bearing is actually a variant of the deep groove ball bearing. The outer spherical bearing is actually a variant of the deep groove ball bearing, characterized by its outer ring outer diameter surface being spherical, which can be matched into the corresponding concave spherical surface of the bearing seat for centering.

Although the basic performance of outer spherical bearings should be similar to that of deep groove ball bearings, due to the fact that this type of bearing is mostly used in relatively rough machinery, installation positioning is not accurate enough, the axis alignment between the shaft and the seat hole is poor, or the shaft is long and has large deflection, and the accuracy of the bearing itself is not high enough. Some structures are also relatively rough, so the actual performance of deep groove ball bearings with the same specifications should be given a considerable discount. For example, an outer spherical ball bearing with a top screw should be used for shafts with large stiffness and deflection differences. This type of bearing has sealing rings on both sides to tightly prevent dirt from entering. When leaving the factory, an appropriate amount of lubricant has been filled, and there is no need to clean or add lubricant before installation. When the top screw screw on the protruding end of the bearing inner ring is tightened on the shaft, the allowable axial load should not exceed 20% of the rated dynamic load.

The performance of the outer spherical ball bearing with eccentric sleeve is basically the same as that of the outer spherical bearing with top screw, except that the top screw is not on the inner ring, but on the eccentric sleeve. The inner hole of the tapered hole outer spherical ball bearing is a tapered hole with a 1:12 taper, which can be directly installed on the tapered shaft or installed on the shoulder free shaft with the help of a locking sleeve, and the bearing clearance can be adjusted.

Outer spherical bearings are preferred for applications that require simple equipment and components, such as agricultural machinery, transportation systems, or construction machinery.

Mainly used to withstand combined radial and axial loads mainly based on radial loads, it is generally not suitable to bear axial loads alone. This type of bearing can be installed with inner rings (with a complete set of rollers and retainers) and outer rings separately. This type of bearing does not allow the shaft to tilt relative to the casing, and will generate additional axial force under radial load. The size of the axial clearance of this kind of bearing has a great influence on whether the bearing can work normally. When the axial clearance is too small, the temperature rise is high; When the axial clearance is large, the bearing is prone to damage. Therefore, special attention should be paid to adjusting the axial clearance of the bearings during installation and operation. If necessary, pre interference installation can be used to increase the rigidity of the bearings