A bearing device (8, 48, 58, 68, 78), comprising: a flange section which protrudes in a radial direction of a rotating shaft (5, 35) rotating about an axis and rotates along with the rotating shaft (5, 35); a stationary bush (13, 43, 63, 73) which is disposed at a distance in the direction of the axis from the flange section, surrounds an outer peripheral surface of the rotating shaft (5, 35), and is provided in a housing supporting the rotating shaft (5, 35) so as to be immovable in the direction of the axis relative to the rotating shaft (5, 35); and a rotation bush which is disposed between the flange section and the stationary bush (13, 43, 63, 73) so as to be interposed between the flange section and the stationary bush (13, 43, 63, 73) in the direction of the axis, surrounds the outer peripheral surface of the rotating shaft (5, 35), and is rotatable relative to the rotating shaft (5, 35) and the housing while floating in a fluid, wherein the rotation bush includes a land surface which is formed on a thrust pad surface in the direction of the axis facing each of the flange section and the stationary bush (13, 43, 63, 73) along a surface in the direction of the axis in the flange section and the stationary bush, and a tapered surface (26A, 26B) which is continuous with the land surface and is inclined such that a gap between the tapered surface and the flange section and a gap between the tapered surface and the stationary bush (13, 43, 63, 73) increase in the direction of the axis toward a direction opposite to a rotation direction of the rotating shaft (5, 35), characterized in that the tapered surface on the flange section side is formed in a region between an end edge on the inside in the radial direction and an intermediate position in the radial direction on the thrust pad surface in the direction of the axis facing the flange section, and the tapered surface on the stationary bush side is formed over an entire region between an end edge on the inside in the radial direction and an end edge on the outside in the radial direction on the surface in the direction of the axis facing the stationary bush (13, 43, 63, 73) so that a ratio of an area of the tapered surface to an area of the land surface on the stationary bush side is larger than that on the flange section side. a flange section which protrudes in a radial direction of a rotating shaft (5, 35) rotating about an axis and rotates along with the rotating shaft (5, 35); a stationary bush (13, 43, 63, 73) which is disposed at a distance in the direction of the axis from the flange section, surrounds an outer peripheral surface of the rotating shaft (5, 35), and is provided in a housing supporting the rotating shaft (5, 35) so as to be immovable in the direction of the axis relative to the rotating shaft (5, 35); and a rotation bush which is disposed between the flange section and the stationary bush (13, 43, 63, 73) so as to be interposed between the flange section and the stationary bush (13, 43, 63, 73) in the direction of the axis, surrounds the outer peripheral surface of the rotating shaft (5, 35), and is rotatable relative to the rotating shaft (5, 35) and the housing while floating in a fluid, wherein the rotation bush includes a land surface which is formed on a thrust pad surface in the direction of the axis facing each of the flange section and the stationary bush (13, 43, 63, 73) along a surface in the direction of the axis in the flange section and the stationary bush, and a tapered surface (26A, 26B) which is continuous with the land surface and is inclined such that a gap between the tapered surface and the flange section and a gap between the tapered surface and the stationary bush (13, 43, 63, 73) increase in the direction of the axis toward a direction opposite to a rotation direction of the rotating shaft (5, 35), characterized in that the tapered surface on the flange section side is formed in a region between an end edge on the inside in the radial direction and an intermediate position in the radial direction on the thrust pad surface in the direction of the axis facing the flange section, and the tapered surface on the stationary bush side is formed over an entire region between an end edge on the inside in the radial direction and an end edge on the outside in the radial direction on the surface in the direction of the axis facing the stationary bush (13, 43, 63, 73) so that a ratio of an area of the tapered surface to an area of the land surface on the stationary bush side is larger than that on the flange section side.