| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage caused by the contact of a rotation shaft with an inner periphery of a sleeve and contrive to improve durability and reliability of a device by increasing moment rigidity of a bearing to the gyro-moment which is caused around a center of gravity of a rotor by a vibration of the device in the shaking direction. SOLUTION: In a fluid bearing device with a rotor having a rotation shaft 1 and a sleeve 5 to which the rotation shaft is fitted with the interval of a specified gap to constitute two radial dynamic pressure bearings arranged apart from each other in the axial direction together with the rotation shaft 1, the bearing rigidity of the radial dynamic pressure bearing which is farther from a center of gravity G of the rotor between two radial dynamic pressure bearings is made the bearing rigity of the other radial dynamic pressure bearing or higher.
|
