The invention relates to a radiator fan, which comprises a fan frame the center of which is provided with a central cylinder, a stator which is sleeved outside the central cylinder, a bearing system which is fixed inside the central cylinder and a rotor which is supported by the bearing system. The bearing system is entirely and fixedly connected to the central cylinder of the fan frame during the process of forming the fan frame, thereby the problems of combined tolerance, concentricity and so on between the bearing system and the fan frame can be effectively prevented; the shake phenomenon is prevented during the operating process of the fan; the assembly steps are simplified and the fan performance is improved. The invention also provides a manufacturing method for the radiator fan.