Abstract: A bearing screw transfer device which converts a rotational motion of a screw shaft into a linear motion by the medium of a bearing is disclosed. The bearing screw transfer device has a first driving bearing and a second bearing which run along a screw groove of a rotating screw shaft, thereby converting a rotational force of the screw shaft into a translational force of an operating plate disposed on an upper portion of the screw shaft, wherein a two-surface screw groove is formed on the screw shaft, and an outer ring of the first driving bearing runs in contact with one surface of the two-surface screw groove, and an outer ring of the second driving bearing runs in contact with the other surface of the screw groove.