A spherical bearing can be a bearing that permits angular rotation in regards to central point in a few orthogonal directions (usually just a specified angular limit good bearing geometry). Typically these bearings support a rotating shaft inside [bore] of the inner ring that has to move not only rotationally, but also at an angle.
Construction of spherical bearings can be hydrostatic or strictly mechanical. A spherical bearing independently can consist of an outer ring and an inner ring in addition to a locking feature that makes the inner ring captive within the outer ring in the axial direction only. The outer surface in the inner ring and the inner surface of the outer ring are collectively considered the raceway plus they slide against each many other, either with a lubricant or a maintenance-free polytetrafluoroethylene (PTFE) based mostly liner. Some spherical bearings add a rolling element say for example race of ball-bearings, allowing lower friction.