A fluid dynamic bearing device comprising: a bearing sleeve; a shaft member which is inserted in the inner periphery of the bearing sleeve; a dynamic pressure generating section which is formed in any one of the outer peripheral surface of the shaft member and the inner peripheral surface of the bearing sleeve and generates fluid dynamic pressure in a radial bearing gap between the outer peripheral surface of the shaft member and the inner peripheral surface of the bearing sleeve; a housing which is formed by pressing, has the bearing sleeve press-fitted in the inner periphery thereof, and has an engaged section which engages with the end surface of the bearing sleeve and is located ahead in the direction of press-fitting of the bearing sleeve; and a thrust receiver which is in contact with and supports an end of the shaft member; a) wherein a large diameter section, a small diameter section, and a stepped section which connects the large diameter section and the small diameter section are provided in the housing and wherein the stepped section configures the engaged section; and b) wherein the bearing sleeve is press-fitted in the inner periphery of the large diameter section, with press-fitted portions between the outer periphery of the bearing sleeve and the inner periphery of the housing being provided at intervals in the peripheral direction, c) and wherein a bottom section, which closes an end of the small diameter section, is integral with or is separated from the housing, d) and wherein the thrust receiver is arranged on the bottom section, characterised in that e) a base is fixed onto the outer peripheral surface of the small diameter section a bearing sleeve; a shaft member which is inserted in the inner periphery of the bearing sleeve; a dynamic pressure generating section which is formed in any one of the outer peripheral surface of the shaft member and the inner peripheral surface of the bearing sleeve and generates fluid dynamic pressure in a radial bearing gap between the outer peripheral surface of the shaft member and the inner peripheral surface of the bearing sleeve; a housing which is formed by pressing, has the bearing sleeve press-fitted in the inner periphery thereof, and has an engaged section which engages with the end surface of the bearing sleeve and is located ahead in the direction of press-fitting of the bearing sleeve; and a thrust receiver which is in contact with and supports an end of the shaft member; a) wherein a large diameter section, a small diameter section, and a stepped section which connects the large diameter section and the small diameter section are provided in the housing and wherein the stepped section configures the engaged section; and b) wherein the bearing sleeve is press-fitted in the inner periphery of the large diameter section, with press-fitted portions between the outer periphery of the bearing sleeve and the inner periphery of the housing being provided at intervals in the peripheral direction, c) and wherein a bottom section, which closes an end of the small diameter section, is integral with or is separated from the housing, d) and wherein the thrust receiver is arranged on the bottom section, characterised in that e) a base is fixed onto the outer peripheral surface of the small diameter section a) wherein a large diameter section, a small diameter section, and a stepped section which connects the large diameter section and the small diameter section are provided in the housing and wherein the stepped section configures the engaged section; and b) wherein the bearing sleeve is press-fitted in the inner periphery of the large diameter section, with press-fitted portions between the outer periphery of the bearing sleeve and the inner periphery of the housing being provided at intervals in the peripheral direction, c) and wherein a bottom section, which closes an end of the small diameter section, is integral with or is separated from the housing, d) and wherein the thrust receiver is arranged on the bottom section, characterised in that e) a base is fixed onto the outer peripheral surface of the small diameter section