Investigation of skidding characteristics of high-speed cylindrical roller bearings based on the improved ADORE model with thermal analysis and lubricant distribution

The research focuses on the issue of excessive skidding for cylindrical roller bearings. The oversimplified thermal analysis module of the rolling bearing dynamics analysis software ADORE was improved with the thermal resistance network method and lubricant distribution. Based on the improved ADORE, the variation mechanism of skidding and the critical radial load for skidding of cylindrical roller bearings were analyzed. The findings indicate that the slip rate and the sliding velocity decreases exponentially with increasing radial load, and 5 % is chosen as the evaluation criterion for the degree of skidding. A method for calculating the critical radial load for skidding of NU-type bearings is proposed, which has reference value for the design of cylindrical roller bearings with low slip rates.