1 0 0 0 OA 深溝玉軸受の保持器形状最適化による低トルク化に関する研究
- 著者
- 鎌本 繁夫 村田 順司 獅子原 祐樹
- 出版者
- 一般社団法人 日本トライボロジー学会
- 雑誌
- トライボロジスト (ISSN:09151168)
- 巻号頁・発行日
- vol.64, no.3, pp.186-192, 2019-03-15 (Released:2019-03-15)
- 参考文献数
- 12
- 被引用文献数
- 4
Deep groove ball bearings can support radial load and axial load in both directions and are widely used as bearings for automobiles and industrial machineries because of advantages such as low torque, low noise and low cost. In recent years, the introduction of automobile fuel economy regulation has been advanced worldwide and will be further strengthened in the future. In the field of industrial machinery, energy saving is also progressing. Deep groove ball bearings used in these fields are required to have lower torque. In many cases, deep groove ball bearings are used for grease lubrication and until now low torque has been promoted by improving grease but there is a limit to the reduction of torque with only improvement of grease, we report on the achievement of low torque by developing a cage of new structure without other performance decreasing.
1 0 0 0 OA AE法を用いた円すいころ軸受の焼付き予兆検知に関する研究
- 著者
- 獅子原 祐樹 長谷 亜蘭
- 出版者
- 一般社団法人 日本トライボロジー学会
- 雑誌
- トライボロジスト (ISSN:09151168)
- 巻号頁・発行日
- pp.22-00018, (Released:2023-02-24)
- 参考文献数
- 14
In recent years, sensing technology has been attracting attention in various industrial fields, and the demand for state detection technology of rolling bearings is increasing. An acoustic emission (AE) technique is effective means for state detection of rolling bearings, because it is more sensitive than the conventional technique. In this study, the AE signals generated from tapered roller bearings when seizure occurred due to starved lubrication were investigated. The AE signal changes during the process of reducing lubricating oil were analyzed. The AE frequency spectra were mainly in the frequency range around 0.1 to 0.4 MHz, and the signal strength was increasing during the process of reducing lubricating oil. Before seizure occurred, the AE signal strength in the high frequency around 1.2 MHz was increasing. In addition, surface changes of the tapered roller bearing due to seizure were observed. Based on these results, it became clear that the direct contact of the metal surface corresponds to the AE frequency peak around 0.1 to 0.4 MHz, and the progress of adhesion corresponds to the shift of the centroid frequency to the high frequency side.