The invention relates to the technical field of assembly machines, in particular to a bearing assembly production line. The bearing assembly production line comprises a mechanical arm mechanism, a feeding mechanism, a roller assembly mechanism and a holder riveting mechanism, wherein the feeding mechanism, the roller assembly mechanism and the holder riveting mechanism are sequentially arranged below the mechanical arm mechanism in the horizontal direction. The roller assembly mechanism comprises a roller positioning core, a holder positioning disc, a roller jacking die, a jacking mechanism and a supporting frame. The jacking mechanism is fixedly connected to the supporting frame. The roller positioning core is arranged on the jacking mechanism in a liftable manner. The roller jacking die is arranged on the jacking mechanism in a liftable manner. The roller positioning core is located above the roller jacking die. The holder positioning disc is arranged on the supporting frame. In actual use, rollers are grabbed by mechanical hands and put on the roller positioning core, holders are grabbed by the mechanical hands and put on the holder positioning disc, the jacking mechanism acts on the roller jacking die so that the rollers can be matched with the holders, the quality of assembled bearings can be controlled within a certain error, the quality of the assembled bearings is improved, and automation is achieved.