The influence of boundary layer properties on grease lubricated high-speed ball bearing performance

verfasst von

S. B. Wiendl, W. R. Zabel, G. Poll, H. H. Gatzen

Abstract

Understanding the tribological basics is essential to extending the service life of machine elements and lubricants. For this purpose, it is necessary to study the micro-/nanotribological interactions between the lubricant and the macro-structure's surface [1], [2], [3]. This paper deals with the influence of lubricating grease composition, in particular the presence of antioxidants, on the grease service life and the tribological performance characteristics of boundary layers in high-speed ball bearings. First of all, the experimental set-up including the bearing test rig, the test parameters and the six model greases will be presented. Thereafter, the equipment for measuring the nanomechanical properties of the boundary layers and the metal surfaces will be described. Experimental results from tribophysical tests like nanohardness measurements and nanoscratch tests include information about the structure of the boundary layers. Finally, these results will be correlated with grease and boundary layer chemi-cal composition as well as with grease service life.

Organisationseinheit(en)

Institut für Maschinenkonstruktion und Tribologie

Typ

Aufsatz in Konferenzband

Seiten

441-447

Anzahl der Seiten

7

Publikationsdatum

2003

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Ingenieurwesen (insg.)

Elektronische Version(en)

https://doi.org/10.1016/s0167-8922(03)80071-8 (Zugang: Geschlossen)