Bearings are key components of ships, with core applications concentrated in three major systems: in the power system, the main engine (such as a diesel engine) supports the crankshaft with sliding bearings, the tail shaft (connecting the propeller) uses water or oil lubricated bearings to resist seawater corrosion, and the intermediate shaft uses self-aligning roller bearings to compensate for installation deviations; In the transmission and auxiliary systems, the gearbox transmits power through tapered roller bearings. Equipment such as generators, pumps, and fans often use deep groove ball bearings, while compressors are equipped with high-speed angular contact ball bearings; In terms of control and deck machinery, the servo system relies on thrust bearings to withstand rudder blade resistance, ensuring flexible ship handling.