Slewing bearings are widely applied in many industries. Construction machinery is the initial application of slewing bearings, such as earthmoving machinery, excavators, disintegrators, stackers and reclaimers, graders, compactors, dynamic compactors, rock drilling machinery, road headers and so on.So the slewing bearing preventive maintenance is very necessary. Once replacing workpiece with the original spare parts, thus will ensure the real performance of the machine. As unreliable products will bring more trouble to you after you put it into use.In addition, during the whole process of replacing operation, it must be operated by professional people, as slewing bearing is unsafe for unprofessional people, remember to disconnect the power of the whole machine once something wrong happen.