This article focuses on the design and testing of components for a musculoskeletal rehabilitation system, which includes a treadmill, a suspension safety mechanism, and robotic manipulators. The primary objective of the research is to develop a universal and safe system for restoring musculoskeletal functions in patients. The study outlines the design process of key system components: a treadmill platform with an extended belt length, a weight-offloading suspension mechanism, and programmable robotic manipulators. Prototypes of the treadmill and the musculoskeletal rehabilitation system (including the safety mechanism, manipulators, and lifting system) were fabricated based on the developed 3D models. Subsequent hardware testing confirmed that the system meets technical requirements: the treadmill provides smooth speed adjustments, the suspension mechanism withstands the required load, and the manipulators follow the specified trajectory with sufficient accuracy (deviation ≤1.79°). The results will be further utilized in the implementation of a musculoskeletal rehabilitation system integrated with biofeedback and virtual reality technologies.