| Citation: | ZHU Wenlin, TANG Xin, ZHU Rupeng, et al. Analysis on temperature characteristics in double-row tapered roller bearings with different rib structures[J]. Journal of Aerospace Power, 2026, 41（4）：20240511 doi: 10.13224/j.cnki.jasp.20240511
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The CFD numerical simulation calculation model was established for two different types of tapered roller bearings with different rib structures. The heat generation calculation and temperature characteristics of the bearings under fully lubricated and oil loss states were studied. The temperature distribution law of the bearings under different inlet lubricating oil flow rates and different speeds was explored, and dry operation comparative verification experiments were carried out. The research results showed that the temperature of each part of the outer rib structure bearing was lower than that of the inner rib structure bearing under fully lubricated state; the volume fraction of bearing lubricating oil was negatively correlated with temperature, but not strictly proportional to the convective heat transfer coefficient; as the rotational speed increased, the temperature of each part of the bearing cavity surface showed an upward trend; in the state of oil loss, the temperature inside the bearing chamber of the outer rib structure was lower than that of the inner rib structure bearing. The dry running ability of the outer rib structure bearing was stronger than that of the inner rib structure bearing, and the highest temperature occurred on the wall of the large roller. As the dry running time increased, the failure of the bearing began at the edge of the large roller.
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