发明授权
US07435001B2 Hydrodynamic bearing device, method for manufacturing the same, spindle motor and recording and reproduction apparatus 有权
流体动力轴承装置,其制造方法,主轴电动机和记录和再现装置

Hydrodynamic bearing device, method for manufacturing the same, spindle motor and recording and reproduction apparatus
摘要:
A hydrodynamic bearing device which can improve workability of injecting a lube repellant and effectively prevent leakage of a lubricant, a method for manufacturing the same, a spindle motor, and a recording and reproduction apparatus are provided. A hydrodynamic bearing device 4 includes a lube repellant 11a which is applied in a circular shape by a predetermined distance in a radial direction from a portion of an upper surface of a second thrust flange 41c where it is connected to a shaft 41 and a lube repellant 11b which is applied in a circular shape on an outer peripheral surface of the second thrust flange 41c below from an upper end in the radial direction by a predetermined distance. The lube repellant 11b is applied near the upper end portion in a gap formed between the outer peripheral surface of the second thrust flange 41c and an inner peripheral surface of an outer sleeve 44.
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