Gear rack rotary hydraulic servo cylinder

The "Sun Yat-sen University" marine comprehensive scientific research training ship is the largest of its kind in China, boasting the highest displacement, the strongest overall scientific research capabilities, and the most innovative design features. The retractable full-speed and zero-speed anti-roll fin technology fills a significant gap in China's technological capabilities. Notably, the key device for controlling the fin swing (the servo swing hydraulic cylinder) was independently developed and manufactured by Uranus.