| 摘要 |
PROBLEM TO BE SOLVED: To provide a dynamic pressure bearing device capable of suppressing reduction of rotation precision at low cost. SOLUTION: This dynamic pressure bearing device 1 is provided with a shaft member 2, a housing 7 molded into a cylindrical shape provided with a bottom part 7c integrally by a mold, and a bearing sleeve 8 fixed to the inner periphery of the housing 7 as main constituent members. The outer periphery of the housing 7 is fixed to a holding member 6. A relief part 11 for preventing both faces including an outer peripheral face of the bottom part 7c of the housing 7 and an inner peripheral face of the holding member 6 opposing to it from coming into contact mutually and partially is provided between both faces. COPYRIGHT: (C)2006,JPO&NCIPI
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