Currently, there is a rapid increase in the use of digital technologies in many areas of human activity. In 2018, the national program “Digital Economy of the Russian Federation” was approved; the goal of the program is the system-wide development and implementation of digital technologies in all areas of life. The term “Industry 4.0” is used in a general sense to characterize new, advanced and potentially breakthrough technologies, including full digitalization and artificial intelligence, as well as the creation of a new generation of equipment, combined into one digital ecosystem. Digital transformation in mining is aimed primarily at increasing productivity; the goal is to increase labor productivity fivefold and increase key indicators of the level of industrial and environmental safety by at least 2-3 times. The development of mining operations is carried out mainly by open-pit mining, which ensures competitive economic indicators of the mining industry. Open-pit mining of mineral deposits is characterized by an increase in the volume of processed rock mass and stripping ratios, production processes are being improved due to advanced technologies, which entails the use of mining equipment of large unit capacity, therefore the efficiency of operation of such equipment is ensured by its proper usage, minimization of expenses for its maintenance and repair. The article solves the problems of creating a digital twin of the cabin of an open-pit crawler excavator and computer simulation of tests for compliance with technical requirements, and an optimal finite element model of the excavator driver’s cabin is developed. The structure of ergonomic reengineering of mining excavator cabins is considered - one of the most effective and cost-effective ways to optimize objects; a model for managing ergonomic reengineering is formalized. A parametric 3D prototype of a mining excavator cabin has been developed in the Autodesk Inventor CAD system, based on a standard modular cabin of an ECG type excavator.