Title:
導電性誘導剤を含む潤滑剤を備えるハイドロベアリングを有する流体動圧ディスクドライブスピンドルモータ
Document Type and Number:
Japanese Patent JP2013501135
Kind Code:
A
Abstract:
Disc drive spindle motor having hydro bearing including a stationary member; a rotatable member which is rotatable with respect to the stationary member; and a hydro bearing interconnecting the stationary member and the rotatable member and having working surfaces separated by a lubricating fluid, wherein the lubricating fluid includes at least one synthetic ester base fluid having a viscosity index of at least 110; from 10 to 5000 ppm of at least one conductivity inducing agent; from 0.01% to 5% by weight, based on the total weight of the lubricating fluid, of at least one antioxidant; and from 0.01% to 5% by weight, based on the total weight of the lubricating fluid, of at least one antiwear additive.
Inventors:
Han, Raquib Udin
Application Number:
JP2012523979A
Publication Date:
January 10, 2013
Filing Date:
August 06, 2010
Export Citation:
Assignee:
Seagate Technology LLC
International Classes:
C10M169/04; C10M105/36; C10M105/38; C10M125/02; C10M129/10; C10M129/40; C10M129/54; C10M129/58; C10M133/06; C10M133/12; C10M133/16; C10M133/40; C10M135/10; C10M149/10; C10M149/14; C10M149/22; F16C17/10; F16C32/06; F16C33/10; H02K7/08; C10N10/02; C10N10/04; C10N10/12; C10N10/16; C10N20/06; C10N40/02
Domestic Patent References:
| JP2005350549A | 2005-12-22 | |||
| JP2001234187A | 2001-08-28 | |||
| JP2001115180A | 2001-04-24 | |||
| JP2005106290A | 2005-04-21 | |||
| JP2004091524A | 2004-03-25 | |||
| JPH11514779A | 1999-12-14 | |||
| JP2005290256A | 2005-10-20 |
Foreign References:
| US5886854A | 1999-03-23 | |||
| WO2004090082A1 | 2004-10-21 |
Attorney, Agent or Firm:
Fukami patent office