Cage whirl characteristics of cylindrical roller bearings considering skidding under high-speed and light-load

Aimed at addressing the issues of cage instability and excessive skidding of cylindrical roller bearings under high-speed and light-load conditions. Dynamic Time Warping method was employed to quantitatively assess the stability of cage motion by calculating the similarity between the tracks of the cage mass center. Additionally, the effects of cage force and roller skidding on the whirling characteristics of the cage were analyzed under various whirling states. The findings indicate that the cage motion is most stable during local periodic whirling, followed by regular circular whirling. The force acting on the cage, which determines the whirling characteristics, varies across different whirling states. The rate of roller slip variation directly affects the normal force, subsequently influencing the whirling characteristics. By reducing the degree of bearing skidding, the collision force between the cage and the roller is lessened, thereby enhancing the stability of cage whirling.