Method for setting gaps in hydrodynamic bearings
US6657339B2 · kind B2 · utility
6Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jun 15, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for setting a gap in a hydrodynamic bearing of a disc drive spindle motors and a motor having such a bearing gap. The method comprises mounting a rotor hub having a central journal sleeve onto a shaft that has been secured to a support after having had a lower thrust bearing pressed onto the shaft in communication with said support, adding an amount of hydrodynamic fluid into the rotor hub's journal sleeve, pressing an upper thrust bearing onto the rotor shaft until contact is made with the rotor hub, and rotating the hub until axial forces balance and set the bearing gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.