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Abstract
Data on thermal properties of ball bearings and roller bearings is scarce, yet of great importance to many rotating machines operating in a vacuum environment. This poster presents simple, but reliable methods to determine bearing properties required for accurate thermal system modeling, beginning from theoretical calculations to empiric testing. A through state-of-the-art analysis gives an overview of the existing analytical methods to determine thermal conductivity, points out their shortcomings and stresses the necessity of empirical methods. Consequently, the design of a low-cost test rig to determine thermal properties of rolling element bearings in a vacuum is described in detail. The test rig allows the variation of different ambient parameters and operating conditions. Finally results comparing different axial loads and running speeds are presented.
Originalsprache | englisch |
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Publikationsstatus | Veröffentlicht - 18 Sept. 2019 |
Veranstaltung | 18th European Space Mechanisms and Tribology Symposium - Gasteig Conference Center, München, Deutschland Dauer: 18 Sept. 2019 → 20 Sept. 2019 http://www.esmats.eu/munich/ |
Konferenz
Konferenz | 18th European Space Mechanisms and Tribology Symposium |
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Kurztitel | ESMATS 2019 |
Land/Gebiet | Deutschland |
Ort | München |
Zeitraum | 18/09/19 → 20/09/19 |
Internetadresse |
Schlagwörter
- Wälzlager
- Wärmeleitung
Projekte
- 1 Abgeschlossen
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FlyGrid - Schwungrad-Energiespeicher für EV-Schnellladung und Netzintegration
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Projekt: Forschungsprojekt