A single-direction thrust ball bearing is a separable bearing. It consists of an inner ring, an outer ring, and a ball and cage assembly. Installation and removal are both convenient. The ring that fits tightly against the shaft is called the inner ring, while the one with a gap from the shaft is called the outer ring. A single-direction thrust ball bearing can only bear unidirectional axial loads and cannot withstand any radial loads, allowing for axial positioning of the shaft in one direction.