Low Load-Independent Losses and Low Temperature Rise Functional Cage Bearing

A functional cage with microstructure has been proposed. By establishing a numerical model of oil-air two-phase lubrication flow field in bearing, the flowability and load-independent losses of functional cage bearing and traditional cage bearing are analyzed. The temperature of functional cage bearing and traditional cage bearing are compared through temperature rise tests. The research results indicate that the functional cage allows more oil to flow through the bearing cavity. Under the same operating conditions, compared to traditional cage bearing, functional cage bearing has lower load-independent losses and lower temperature rise. The maximum load-independent losses reduction is 77%, and the average load-independent losses reduction is 72%. The maximum temperature decreased by 4℃. The average temperature decreased by 3.2 ℃. The proposed functional cage has low load-independent losses and low temperature rise characteristics. This provides a new concept for designing low load-independent losses and low temperature rise bearing cage structures.