The application of bearings in the shipbuilding industry mainly includes two categories: sliding bearings and rolling bearings. Sliding bearings rotate through relative sliding between the shaft and the bearing, and are commonly used in parts that require bearing large loads or low speeds, such as stern bearings. They are located between the ship propeller and the main engine, transmitting power and supporting the propeller. Rolling bearings rotate by rolling elements (such as steel balls and rollers) between the inner and outer rings, and have the characteristics of low frictional resistance and high operating efficiency. They are widely used in various transmission devices, such as engines and gearboxes.

In addition, special bearings such as thrust bearings may be used on ships to withstand axial loads and ensure the stability of the axis; Water lubricated bearings use water as a lubricant and are suitable for occasions with strict environmental pollution requirements. The application of these special bearings further enhances the performance and reliability of ships.