Against the backdrop of the Sustainable Development Goals (SDGs), there is growing momentum toward higher efficiency in a variety of industrial products. This means that rolling bearings, which are used in the moving parts of various products, are required to have even lower torque and longer service life. However, there is no theoretical guideline for the optimal design of rolling bearings.

Therefore, we are working on the derivation of various theoretical equations that clarify the lubrication mechanism of rolling bearings. In order to verify the accuracy of these theoretical equations, it is also necessary to develop advanced visualization techniques. We hope to contribute to the realization of a sustainable society by finding theoretically based optimum design guidelines for rolling bearings.