The Effect of Adapter Crown Wear on Rated Fatigue Life of a Railroad Tapered Roller Bearing
| Autor: | C. Cusano, R. A. Post, T. F. Conry |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Tribology Transactions. 42:874-880 |
| ISSN: | 1547-397X 1040-2004 |
| DOI: | 10.1080/10402009908982295 |
| Popis: | A model is developed to describe the effects of adapter crown wear on the misalignment of a railroad tapered-roller bearing. Wear of the crowned surface results in a flat on top of the adapter. This flat, in contact with the wear plate, is shown to have the capacity to transmit a moment between the bearing and the side-frame of the truck. The magnitude of the moment transmitted is dependent on the length of the flat. These analytical results are coupled with model results from a bearing manufacturer, which give the relationship between bearing misalignment, and thus transmitted moment, and reduction in fatigue life of the bearing. The analysis indicates that a slightly worn adapter has no appreciable effect on the rated fatigue life of the bearing, but once a threshold level in adapter crown wear is reached, the bearing fatigue life will begin to decrease. Large amounts of adapter crown wear will result in significant bearing misalignment and a corresponding reduction in the fatigue life of the bearing. P... |
| Databáze: | OpenAIRE |
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