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| 标 题： |
A study of the grease with water resistance and low friction torque for hub unit bearings
对具有防水性和低摩擦扭矩的轮毂单元轴承润滑脂的研究 |
| 作 者： |
Yasuhiro Maeda
Michita Hokao
Noriyuki Inami |
| 关键词： |
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| 出版年： |
2015 |
| 文集名： |
Gestaltung, Berechnung, Einsatz Fachausstellung
设计、计算、应用专业展览 |
| 会议名： |
11. VDI-Fachtagung Gleit- und Waelzlagerungen
11. VDI专业会议 滑动轴承与滚动轴承 |
| 届 次： |
11th |
| 摘 要： |
Recently, vehicle production volumes have been increasing. In particular, vehicle demand has rapidly expanded in newly developing countries. Yet, unlike developed countries, these developing countries don't always build adequate infrastructure; these areas utilize many dirt roads and often experience heavy rainfall. On the other hand, in developed countries, there is a high demand to reduce carbon dioxide emissions and automotive companies are required to make environmental progress. Hub unit bearings, which require smooth wheel rotation, are mounted at the wheel center. The hub bearing is a critical part which supports the automotive body and requires high reliability. Additionally, to make environmental progress, hub unit bearings have strong requirements for low friction. NSK has developed effective grease technologies to meet the diverse requirements of hub unit bearings, such as high reliability and low friction under severe environmental conditions. Under a water ingress condition, the developed grease extended bearing life by using a special grease composition which can separate water drops and form a thicker oxide film. At low speeds and heavy load conditions, the developed grease decreased friction torque via the base oil's low viscosity-pressure coefficient. This paper reports the results of NSK's testing and observations.
NSK有限公司；NSK有限公司；NSK有限公司 |
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