Recent Technical Trends of Lubricating Oils for Fluid Dynamic Bearings in Hard Disk Drives

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  • ハードディスクドライブ向け流体動圧軸受用潤滑油の近年の技術動向
  • ハードディスクドライブ ムケ リュウタイドウアツ ジクウケヨウ ジュンカツユ ノ キンネン ノ ギジュツ ドウコウ

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<p>We introduce technical trend of ester lubricating oils for fluid dynamic bearings, used for HDD (hard disk drive) spindle motors. The particularly important characteristics required for lubricating oil are low viscosity, heat-resistance, high viscosity index and low outgassing. We found that esters derived from fatty acids and 3-Methyl-1, 5-pentanediol show good performance. In this report, we introduce the performance of various 3-Methyl-1, 5-pentanediyl esters.</p>

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