Cause analysis of bucket wheel reclaimer slewing bearing trouble

In practice, the slewing bearing failed in many aspects, such as larger load, abnormal impact, abrasion in raceway, noise increasing and other problems. The main causes of these

problems include the installation of slewing bearing, stress of slewing bearing, and post-maintenance of slewing bearing.

The installation of slewing problems mainly include quality flaw of slewing bearing. The overall quality of slewing bearing is better, but there will be some problems in transporting and storing, such as deformation in slewing bearing. The weak location of slewing bearing is broken. The ball track of slewing bearing is processed with quenching. Then there will be quenching weak area in the slewing bearing, where the hardness and intensity are poor. In this way, the failure of slewing bearing may occur because of this reason. Besides, installation accuracy of slewing bearing is bad. When the slewing bearing works, its end face and supporting platform should coordinate closely. If the flatness error of supporting platform exceed the permission range, this will result in the deformation of slewing bearing, leading to many problems such as unstable operating, much noise, large impact, and large loads of the reclaimer.

In fact, the reclaimer would coordinate with other mining equipment such as belt conveyor design, screw conveyor and etc. So the normal operating of the reclaimer influences the other related equipment. Any process of the project must not have failure.