Study on the wear and temperature rise of cylindrical roller bearings with surface microstructures

This study investigates the effects of surface microstructures applied to the inner ring raceway of cylindrical roller bearings on wear reduction and temperature rise characteristics. An orthogonal experimental design was employed to conduct wear and temperature rise tests on bearings with nine different microstructure parameter combinations. Corresponding finite element simulation models were established for performance comparison. The results indicate that the influence order of microstructure parameters on wear and temperature rise is: area density > shape > area > depth. When featuring circular microstructures with an area density of 3%, a depth of 8 μm, and an area of 7850 μm ² , the bearing exhibited a 26.79% reduction in wear and a 2.88% decrease in temperature rise compared to non-microstructured one. Furthermore, based on the Archard wear model, a predictive wear model incorporating microstructure parameters was developed. Parameter optimization predicts that with an area density of 3.069%, shape factor 0.703, depth 8 μm and area 7850 μm ² , the bearing wear is reduced to 3.853 mg, a 31.19% reduction from the conventional bearing and lower than the orthogonal optimum of 4.1 mg.