| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic bearing with high reliability where an air repellent film does not flow into the inside of the bearing nor adheres to unnecessary parts. SOLUTION: By forming an annular concave on the section of the sleeve 1 between the surrounding of the level of lubrication oil 7 and the painted area of the oil repellent 8, and fluid in of the oil repellent 8 is protected. Surface roughness of the painted area by the oil repellent 8 is made greater than that of the axial body or the rotor unpainted with the oil repellent.
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