No.1015 2017環境関連技術特集号 玉軸受の低トルク性および静音性に貢献するグリース潤滑技術 |
| カテゴリー | 論文 |
|---|---|
| 筆者 | 研究開発本部 材料研究部 三宅一徳 津田武志 吉崎浩二 |
| 要旨 | A study was conducted to verify the effect of grease on the low torque property and low noise property which are particularly highly sought bearing performances. We focused on the viscoelasticity of grease as the dominating factor of bearing rotational torque. As a result, we clarifi ed that the higher the viscoelasticity, the lower the torque, and that grease families with short carbon chains were superior in terms of low torque characteristic. Moreover, bearing noise increases when grease thickener becomes trapped between the raceway and rolling element causing the oil film thickness to vary, therefore low noise was better achieved if thickeners with low Young’s modulus and small particle size were used as this minimizes oil film variance. |
| キーワード | grease, bearing torque, grease noise, young modulus, particle size |
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