Contrast Research about Performance of PA1010 and HPb59-1 Isolator in Heavy Slewing Bearing

Abstract

Abstract The performance of heavy slewing bearing isolator materials PA1010 and HPb59-1 mating for bearing steel GCr15 was investigated through experiments in this paper. The effects of applied load, sliding speed and lubricant on friction coefficient and wear loss of PA1010 and HPb59-1 were discussed. The damage mechanism and failure law of PA1010 and HPb59-1 isolators were analysed. The results show that the friction coefficient of PA1010 is lower than that of HPb59-1 and the wear loss of PA1010 is higher than HPb59-1. The influence of rotational speed on the tribological properties of HPb59-1 is obviously higher than that of PA1010. At the low sliding speed, the wear loss of these two materials changes more significantly with the change of load. The influence of coupling pair surface roughness on the tribological properties of PA1010 is significantly higher than that of HPb59-1. When the surface roughness of coupling steel ring increases from 0.2μm to 0.4μm, the growth rate of friction coefficient of PA1010 is 274.1% higher than that of HPb59-1, and the growth rate of wear loss is 25.5% higher than HPb59-1.