Redesign of the vital subsystems as a way of extending the bucket wheel excavators life

As it is widely known, there are three basic reasons for the bucket wheel excavators subsystems redesign: (1) better customization of the machine versus operating conditions; (2) easier maintenance and (3) failure of the substructure under consideration. The improved design solution of the excavating device, outlined in this paper, was developed to satisfy the first and second reason, while the redesigned bucket wheel boom hoisting system satisfies the third. Thanks to the mentioned redesigns, partial revitalizations of the bucket wheel excavators are realised, leading to considerable increase of the machine's reliability as well as the reliability of the complete surface mining system and, additionally, making the maintenance process easier