Excavators are of two types — continuous and periodic machines. The components of this construction machine is the chassis, rotary mechanism and working equipment. The main characteristics of the excavator are laid in the indexing system. Quite extensive data on the construction machine is laid in the index structure. The letter designation of the type of excavator is initially indicated. Next are 4 digital index, having their own individual decoding. These numbers mean dimension, type of machine device, design of working equipment and, accordingly, the serial number of the model. The indexation is completed by another 2 letters: the first indicates the next modernization of the excavator, and the second — to climatic execution.
