The Influence of the Centripetal Acceleration on the Temperature Behavior of Rolling Bearings

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Hochrein D, Tremmel S, Wartzack S
Zeitschrift: Bearing World Journal
Jahr der Veröffentlichung: 2018
Band: 3
Seitenbereich: 57 - 69
ISSN: 2513-1753
Sprache: Englisch


Abstract

The bearing temperature is one of the essential variables in order to describe a bearing system. Especially under extreme conditions such as external accelerations, an unsuitable temperature development at the bearing position can cause significant damage. This work examines the temperature behavior under the influence of high centripetal accelerations up to 1 000- times gravity. Therefore, the factors centripetal acceleration, relative speed of the specimen and the oil flow rate were varied systematically. Contrary to our expectations, the temperature does not rise with an increase of the centripetal acceleration. This behavior can essentially be explained by the impact of the acceleration to the supplied oil flow rate. Therefore the increased injection speed of the lubricating and cooling oil leads to a better cooling of the roller bearings and the bearing temperature nearly remains constant. If the relative speed of the specimen increases, the bearing temperature behaves as with bearings, which are not exposed to the influence of high accelerations. E.g. the temperature rises, even if only moderate. The temperature behavior was analyzed and evaluated in the context of the present frictional moment. In order to achieve a sufficient cooling effect by the lubricating oil flow an appropriate amount of lubricant is necessary. The present investigation showed that with roller bearings exposed to centripetal accelerations the necessary amount of oil is about ten times higher than under normal
circumstances. Appropriate flow rates depending on the requirements were identified by the variation of the oil flow rate. A look at the overall context shows that the bearing temperature is not an exclusion criterion for the use of roller bearings exposed to high accelerations. With an appropriate design of the oil supply also a self-regulation effect of the oil flow rate can be achieved by the present accelerations.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Hochrein, David
Lehrstuhl für Konstruktionstechnik
Tremmel, Stephan Dr.-Ing.
Lehrstuhl für Konstruktionstechnik
Wartzack, Sandro Prof. Dr.-Ing.
Lehrstuhl für Konstruktionstechnik


Zitierweisen

APA:
Hochrein, D., Tremmel, S., & Wartzack, S. (2018). The Influence of the Centripetal Acceleration on the Temperature Behavior of Rolling Bearings. Bearing World Journal, 3, 57 - 69.

MLA:
Hochrein, David, Stephan Tremmel, and Sandro Wartzack. "The Influence of the Centripetal Acceleration on the Temperature Behavior of Rolling Bearings." Bearing World Journal 3 (2018): 57 - 69.

BibTeX: 

Zuletzt aktualisiert 2019-06-05 um 15:38