| 摘要 |
PROBLEM TO BE SOLVED: To provide a pivot bearing unit that can reduce the number of components, be designed readily, and reduce the thickness of an HDD by reducing the axial length thereof. ! SOLUTION: In the pivot bearing unit, an outer ring spacer 60 is disposed between a pair of outer rings 43, 53 of deep groove ball bearings 40, 50 and axial clearance S is formed between a pair of inner rings 41, 51, while a labyrinth gap C is formed between an inner peripheral surface 64 of the outer ring spacer 60 and outer peripheral surfaces 41a, 51a of the inner rings 41, 51. ! COPYRIGHT: (C)2015,JPO&INPIT |
