The utility model relates to a supporting device, in particular to a base supporting component for a ball bearing separation assembly machine. The base supporting component aims at solving the problem that the matched base supporting component needs installing on the ball bearing inner ring and outer ring separation assembly machine. An upper disc, a material lifting disc and a base are sequentially arranged from top to bottom, four stand columns are evenly arranged between the base and the upper disc along a same periphery, the lower end of each stand column is connected with the base, the upper end of each stand column penetrates through a guide sleeve and the material lifting disc to be connected with the upper disc, the upper end of each guide sleeve is connected with the material lifting disc, two cylinder heads are both installed on a lower end face of the material lifting disc, each cylinder head corresponds to one material lifting cylinder, the cylinder head is connected with a piston on the material lifting cylinder, and the lower ends of the two material lifting cylinders are both fixedly connected with the base. The base supporting component is used for the ball bearing separation assembly machine.