Modified structure for reduction of cavitation at fluid dynamic bearing of HDD spindle motor under non-operating axial vibration

Junho Seo, Moonho Choi, Seokhwan Kim, Yoon Chul Rhim

Research output: Contribution to journalArticle

Abstract

A hard disk drive (HDD) is subjected to the axial vibration while it is transported long distance or stored in vibrating environments. The cavitation may occur in the lubricant film of the spindle thrust bearing due to the axial vibration. The cavitation bubble may push the lubricating oil out of the bearing clearance so that it may be resulted in system failure of the HDD. The formation of cavitation bubble is studied for a specially designed fluid dynamic thrust bearing (FDTB) for the HDD. A novel design method for the FDTB is proposed, which suppresses cavitation effectively.

Original languageEnglish
Pages (from-to)1483-1491
Number of pages9
JournalMicrosystem Technologies
Volume22
Issue number6
DOIs
Publication statusPublished - 2016 Jun 1

Fingerprint

Bearings (structural)
spindles
Hard disk storage
thrust bearings
fluid dynamics
Fluid dynamics
cavitation flow
Cavitation
Thrust bearings
vibration
Bubbles (in fluids)
bubbles
system failures
lubricating oils
Lubricating oils
clearances
lubricants
Lubricants

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

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abstract = "A hard disk drive (HDD) is subjected to the axial vibration while it is transported long distance or stored in vibrating environments. The cavitation may occur in the lubricant film of the spindle thrust bearing due to the axial vibration. The cavitation bubble may push the lubricating oil out of the bearing clearance so that it may be resulted in system failure of the HDD. The formation of cavitation bubble is studied for a specially designed fluid dynamic thrust bearing (FDTB) for the HDD. A novel design method for the FDTB is proposed, which suppresses cavitation effectively.",
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Modified structure for reduction of cavitation at fluid dynamic bearing of HDD spindle motor under non-operating axial vibration. / Seo, Junho; Choi, Moonho; Kim, Seokhwan; Rhim, Yoon Chul.

In: Microsystem Technologies, Vol. 22, No. 6, 01.06.2016, p. 1483-1491.

Research output: Contribution to journalArticle

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