Tribology Letters

, Volume 53, Issue 1, pp 261–270

Effect of Pitch and Roll Static Angle on Lubricant Transfer Between Disk and Slider

  • Deng Pan
  • Andrey Ovcharenko
  • Min Yang
  • Filippo Radicati
  • Frank E. Talke
Original Paper


A precision spin stand was used to study the effects of pitch static angle and roll static angle on lubricant transfer between a disk and a slider in a hard disk drive. The lubricant distribution on the slider was determined by time-of-flight secondary ion mass spectrometry, while the lubricant distribution on the disks was obtained using optical surface analysis. Lubricant transfer from the disk to the slider was found to increase as a function of the pitch static angle of the slider. Negative roll static angles were found to have a larger effect on lubricant transfer and the formation of lubricant moguls than positive roll static angles. Suspension frequencies and pitch mode frequencies were observed in the lubricant mogul patterns for negative roll static angles.


Lubricant transfer Pitch static angle Roll static angle Hard disk drive 


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Deng Pan
    • 1
  • Andrey Ovcharenko
    • 2
  • Min Yang
    • 2
  • Filippo Radicati
    • 2
  • Frank E. Talke
    • 3
  1. 1.School of Mechatronics EngineeringHarbin Institute of TechnologyHarbinChina
  2. 2.Western Digital CorporationSan JoseUSA
  3. 3.Center for Magnetic Recording ResearchUniversity of CaliforniaSan DiegoUSA

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