Abstract

The film thickness decay of grease-lubricated bearings is determined by a loss of lubricant from the bearing. One of these loss mechanisms is base oil evaporation. In this article, a model is presented for evaporation where the volatiles leave the bearing by breathing. The model is applied to a typical drive cycle where the temperature is varied in time. The impact of the volatility of base oils and quality of sealing on the evaporation losses can be quantified with this model.

中文翻译：

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脂润滑滚动轴承基础油的蒸发模型，包括呼吸

摘要

脂润滑轴承的油膜厚度衰减取决于轴承中润滑剂的损失。这些损失机制之一是基础油蒸发。在本文中，介绍了一个蒸发模型，其中挥发物通过呼吸离开轴承。该模型应用于温度随时间变化的典型驱动循环。该模型可以量化基础油的挥发性和密封质量对蒸发损失的影响。