Abstract Solid-lubricated rolling bearings are widely known in many technical systems where conventional lubrication, such as oil or grease, fails due to critical conditions like vacuum or high temperatures. Polymeric cages (e.g., polyimide) endowed with molybdenum disulfide (MoS2) particles and silver (Ag) coating on the bearing components have proven themselves as dry lubricants that could significantly increase the service life of solid-lubricated rolling bearings. It has been demonstrated that during the bearing operation, material particles of the cage are transferred onto the raceways and lubricate the bearing. Thereby, the energy dissipates due to the momentary sliding at the ball–cage pocket interface. As a result of this behavior, the cage experiences wear apart from serving as a lubrication reservoir. In order to describe the lubrication transfer amount or the wear volume at the cage pocket, it is essential to estimate the material-specific wear rate. This contribution introduces an approach to determine and analyze the wear rates at the ball–cage pocket interface. In this article, only one example of lubrication coatings with specific operating conditions are shown, but the approach applies to other cases as well. This analysis has been achieved by performing bearing experiments under high vacuum conditions together with the combination of computational modeling. As an outcome, there are two aspects considered. The present contribution provides insight into the procedure to estimate material-specific wear rates. Additionally, it shows how wear rate data distribution can be analyzed. The future scope of this work is the input for the development of the model to predict and optimize the service life of such bearings to some extent.

中文翻译：

---

一种测定和分析固体润滑滚动轴承保持架兜孔接触磨损率的方法

摘要 固体润滑滚动轴承在许多技术系统中广为人知，在这些技术系统中，传统润滑（例如油或油脂）会因真空或高温等临界条件而失效。轴承部件上带有二硫化钼 (MoS2) 颗粒和银 (Ag) 涂层的聚合物保持架（例如聚酰亚胺）已被证明是一种干润滑剂，可以显着提高固体润滑滚动轴承的使用寿命。已经证明，在轴承运行期间，保持架的材料颗粒会转移到滚道上并润滑轴承。因此，能量因球-保持架口袋界面处的瞬时滑动而耗散。作为这种行为的结果，保持架除了用作润滑剂储存器之外还经历磨损。为了描述保持架兜孔处的润滑转移量或磨损量，必须估计特定材料的磨损率。该贡献介绍了一种确定和分析球-保持架凹槽界面磨损率的方法。在本文中，仅显示了具有特定操作条件的润滑涂层的一个示例，但该方法也适用于其他情况。这种分析是通过在高真空条件下进行轴承实验并结合计算建模来实现的。作为结果，有两个方面考虑。目前的贡献提供了对估计材料特定磨损率的程序的深入了解。此外，它还显示了如何分析磨损率数据分布。