Slewing bearing is a kind of special structure and comprehensive load bearing , which can bear high axial load, radial load and overturning moment at the same time . So when choosing the slewing bearing should strictly according to the calculated data ! In mobile cranes, excavators and other kinds of engineering machinery, slewing bearing is important components passed axial load, radial load and tilting moment between turntable and the chassis . In the lighter load condition , it can work normally and rotate freely. But if overloaded all the time , especially in the largest lifting weight and amplitude , the slewing bearing is hard to rotate , the worst case is that can not rotate and stuck . So when it happens, Xuzhou Xinda Slewing Bearing Co., Ltd advise you to reduce the amplitude, timely adjust the leg or mobile chassis location methods make the tilting body tilt , in order to help the weight to accomplish the lifting operation, avoid damage of slewing bearing . If found not in time , under the overload condition , will increase slewing bearing damage , so when the customer consult ,the slewing bearing raceway has been seriously damaged, inner ring under the working in the sides and front of raceway ring crack along the direction of raceway, place on the seat of raceway stress region biggest sag, and in the sag area produce radial cracks. It is important to choose the slewing bearing type , load calculation is also try to prolong the slewing bearings service life .

 

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