Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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Analysis of Radial Air-shear Force on Magnetic Disks for Reducing the Spin-off of Lubricants

  • Kurita, M. (Mechanical Engineering Research Laboratory, Hitachi, Ltd.) ;
  • Shimizu, H. (Mechanical Engineering Research Laboratory, Hitachi, Ltd.) ;
  • Mizumoto, M. (Mechanical Engineering Research Laboratory, Hitachi, Ltd.) ;
  • Ootani, Y. (Data Storage Systems Division, Hitachi, Ltd.)
  • Published : 2002.10.21
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Abstract

To reduce the spin-off of lubricants on a magnetic disk, which is caused by the radial component of shear force between the disk and air, we analyzed the air-velocity distribution and the air-shear force by three-dimensional large-eddy simulation (LES). This sensitivity analysis, on five design parameters, showed that disk/arm clearance and arm thickness have a greater effect on the mean radial air-shear force than the other parameters. The force on a disk optimized according to the optimum parameters is 12% less than the force on a conventional disk.

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