| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a hydrodynamic bearing unit capable of accurately setting up the width of a clearance of a thrust bearing at low costs. SOLUTION: The manufacturing method for a hydrodynamic bearing unit enables the setup of the width of the clearance of each thrust bearing at first and second thrust bearing sections T1 and T2 by means of the deformation of the internal bottom surface 7b1 of a housing 7. Thus, manufacturing costs of the hydrodynamic bearing unit can be reduced so that a positioning step section and positioning member used for setting the width of a clearance of the conventional thrust bearing are unnecessary. COPYRIGHT: (C)2008,JPO&INPIT
|
