Quantitative clarification for influence of external vibration to damage in small ball bearing

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420088
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Kanto Gakuin University
• Principal Investigator: KANADA Tohru 関東学院大学, 理工学部, 教授 (20169551)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 軸受寿命 / 軸受損傷 / 外部振動 / 寿命計算規格 / 補正係数

Outline of Final Research Achievements

For small ball bearings (608VV), in the range of external radial vibration whose frequency is 24.75±0.5Hz and vibration acceleration is up to 10m/s2, almost all the test bearings kept their duration life. However, when the external vibration became larger, it was observed that the vibration arising from the test bearing increased with the external vibration. In case that the external vibration was applied, a travel trail came to be highly visible on the fixed outer raceway surface for loading area. Furthermore, it was made clear that the travel trail became more heavy and distinguished with larger external vibration. Though there was a tendency that the surface fatigue in the outer raceway for loading area increased, it was confirmed that the value of fatigue index was small and the surface fatigue was not an influencing factor in this case.

Free Research Field

精密測定、機械要素設計、規格開発