To provide a hydrodynamic pressure bearing unit capable of bearing a rotary shaft in high speed rotation while a small quantity of lubricating liquid, despite in the liquid state, is circulated naturally without causing leakage to the surrounding.
A bearing unit is composed of rotation side members 2 and 4 and a stationary side member 3, and in the bearing gap formed between the members, a fluid lubricating film of high pressure is formed, and thereby a rotary shaft 1 in rotation is borne. In this hydrodynamic pressure bearing unit, an absorbing substance 10 is provided adjacent to the rotation side members 2 and 4 and stationary side member 3 and confronting the bearing gap, and the lubricant exhausted from the bearing gap is absorbed by the substance 10 for storage, while a transfusion pipe 11 is inserted in the substance 10 so that the lubricating liquid in the substance 10 is sucked naturally to the bearing gap via the transfusion pipe 11.
KADOFURI MASAHIRO
MIZOBUCHI SHOTARO
