| Abstract:The failure characteristics of cone roller bearings at wet end in a pulp drying machine were obtained through the test of vibrations of bearing houses, the observation of microstructure of bearings and the analysis of the new and old lubrication grease such as color,water content,metal content,and organic content. It indicated that the vibration spectrum and grease color were abnormal; the water content and the Fe, Zn ＆ Li contents of grease increased and organic contents were changed. Some measures could be taken to slow down bearings failure, it includes to use appropriate greases, installation bearing clearance and sealing materials, and the mixture of incompatible greases is avoided. |
