This paper presents an approach to examine the features of a high-speed spindle system used in turning operations. The precision of machined parts depends significantly on the performance of the entire machining system, particularly influenced by the behavior of the main spindle. The study focuses on direct-driven spindle units designed for high-speed and high-performance cutting. The paper analyzes the static characteristics of a turning machine spindle and discusses enhancements made to the CAD model for such complex systems.