The invention discloses a bearing press mounting device for mounting a bearing at a target position on the outer surface of a shaft. The bearing press mounting device comprises a press, a pressing head, a clamp, a limiting plate and a limiting ring, wherein the press is provided with a driving component capable of moving vertically; the pressing head is used for pressing the bearing on the shaft; the pressing head is arranged on the driving component of the press and can move vertically together with the driving component; a vertical extended accommodating hole into which the shaft extends is formed in the pressing head; the clamp is used for holding the shaft vertically; the limiting plate is arranged on the outer surface of the pressing head and can move vertically together with the pressing head; the limiting ring is arranged around the shaft; and when the limiting plate moves vertically downwards together with the pressing head, the limiting ring presses against the limiting plate to limit the vertical downward moving distance of the pressing head. The bearing press mounting device can ensure that the bearing is not damaged in the mounting process, ensure the accuracy of the mounting position and meet the requirement for batch production.