Precise speed reducer bearing assembling device

The invention belongs to the field of speed reducer manufacturing devices and relates to a precise speed reducer bearing assembling device. The precise speed reducer bearing assembling device comprises a frame and also comprises a bearing housing conveying device, a loading-unloading robot, a bearing housing transferring device, a bearing pressing device, a CCD vision transferring device, and shaft and shaft disc assembling device which are arranged on the frame, wherein the bearing housing conveying device is used for conveying bearing housings; the loading-unloading robot is used for transferring the bearing housings to the bearing housing transferring device; the bearing housing transferring device is used for conveying the bearing housings to the bearing pressing device; the bearing housing pressing device is used for pressing bearings into the bearing housings; the bearing housing transferring device is used for transferring the bearing housing pressed with the bearings to the CCD vision transferring device. The assembling device is capable of automatically assembling without participation of manpower, and is high in speed, high in efficiency and high in accuracy.