To provide a floating bush bearing for reducing vibration by preventing oil whirl and oil whip, and to provide a turbocharger for reducing noise by mounting this bearing on the turbocharger.
This floating bush bearing is composed of a rotary shaft 1, a cylindrical floating bush 2 for slidingly contacting with the rotary shaft 1, and a bearing 3 for slidingly contacting with the floating bush 2 on the outer peripheral side of the floating bush 2. In the floating bush bearing, a groove 8 which extends in the shaft direction is arranged on an inner peripheral surface or an outer peripheral surface of the floating bush 2. The floating bush turns into a multirobe bearing due to deformation by centrifugal force during rotation and the oil film on the inner and outer periphery of the floating bush is stabilized, so that the oil whirl and the oil whip can be prevented.
INOUE TOMOAKI
UDAGAWA TETSUO
