Abstract
Understanding the relevance and significance of the various replenishment mechanisms in grease-lubricated bearings is very important in choosing the appropriate lubrication strategy. This study shows that the lubricant film thickness in the ball-ring contacts of a deep groove ball bearing may increase by 10%–25% due to vibrations. The possible mechanisms behind this film thickness increase are discussed. Of the proposed contact replenishment mechanisms, the micro-lateral motion of the contact edge across the tracks caused by in-operation vibrations appears crucial. Results show that in the starved contacts, vibration plays a vital role in determining the film thickness.
Original language | English |
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Article number | 109325 |
Number of pages | 10 |
Journal | Tribology international |
Volume | 193 |
Early online date | 22 Jan 2024 |
DOIs | |
Publication status | Published - May 2024 |
Keywords
- UT-Hybrid-D
- Grease
- Film thickness
- Elastohydrodynamic lubrication
- Vibration
- Rolling bearings