The design of high-speed rotor systems and supports used in them are considered. Analysis of operating characteristics of rotor systems is given. Benches and equipment with high-speed contactless supports, methods for solving problems of a bearing with external gas pressurization, methods for designing high-speed rotor assemblies are presented. For engineering and technical workers of machine-building enterprises. It can be useful for students researching and designing high-speed rotor systems on contactless supports.