Heat Transfer at moving bearing interfaces is a key parameter for the thermal characterization and design of high precision machine tools and electrical engine systems for e-mobility application. Yet, the majority of experimental approaches use tactile sensors to obtain the required temperature information for the calculation of heat transfer coefficients. However, only a limited amount of sensors can be placed in the investigated system, also including significant measurement uncertainties, long investigation times, and providing only access to local temperature information. To overcome these shortcomings, a novel method is presented, using infrared thermography to obtain transient and spatially resolved temperature information of bearing front surfaces. The recorded temperature data is used in an inverse evaluation algorithm, to determine the heat transfer coefficient, considering for modeling heat conduction as well as convective fluxes due to rotating components. Finally, experimental temperature data and calculated heat transfer coefficients are presented, discussing further the effect of low angular velocities on the heat transfer. It is shown, that this method is capable to detect changes in heat transfer coefficient due to variations in rotational speed which was not possible with existing methods. Concluding, this approach can be used in future work to focus in detail on the influence of different rolling elements, geometry and interstitial media.

运动轴承界面处的传热是用于电动汽车应用的高精度机床和电动发动机系统的热特性和设计的关键参数。但是，大多数实验方法都使用触觉传感器来获得所需的温度信息，以计算传热系数。但是，只能在受调查的系统中放置有限数量的传感器，其中还包括大量的测量不确定性，调查时间长以及仅提供对本地温度信息的访问。为了克服这些缺点，提出了一种新颖的方法，使用红外热成像技术来获得轴承前表面的瞬态和空间分辨的温度信息。记录的温度数据用于逆评估算法中，确定热传递系数，要考虑对热传导以及旋转分量引起的对流通量进行建模。最后，给出了实验温度数据和计算出的传热系数，进一步讨论了低角速度对传热的影响。结果表明，该方法能够检测由于转速变化引起的传热系数变化，而这是现有方法无法实现的。最后，可以在以后的工作中使用此方法来详细关注不同滚动元素，几何形状和间隙介质的影响。进一步讨论低角速度对传热的影响。结果表明，该方法能够检测由于转速变化引起的传热系数变化，而这是现有方法无法实现的。最后，可以在以后的工作中使用此方法来详细关注不同滚动元素，几何形状和间隙介质的影响。进一步讨论低角速度对传热的影响。结果表明，该方法能够检测由于转速变化引起的传热系数变化，而这是现有方法无法实现的。最后，可以在以后的工作中使用此方法来详细关注不同滚动元素，几何形状和间隙介质的影响。