SIGMA - Sigma 103NC2 Parts

Official spare parts catalog for the Sigma 180mm F3.5 D EX APO MACRO lens designed for Nikon AF camera bodies. This comprehensive technical document provides essential information for component identification, replacement, and assembly procedures. The catalog features detailed exploded diagrams illustrating the precise arrangement of all optical and mechanical elements within the lens assembly, accompanied by standardized part numbers and complete parts listings. Each component is identified by its Sigma reference number alongside both Japanese and English designations, facilitating accurate component location and ordering. Coverage includes optical groups (front lens elements, objective mounts, scale rings), focusing mechanisms (cam units, ultrasonic motors, focus guides), and protective and fastening components. The technical drawings showcase both external and internal elements, enabling thorough understanding of the lens architecture and structure. This catalog represents an indispensable resource for maintenance technicians, professional repair workshops, and experienced users undertaking technical interventions on this professional-grade macro lens.