Stern Tube Bearing
A stern tube bearing is a critical component in ships that supports the propeller shaft and transfers radial loads from the propeller to the ship's structure. These bearings, typically of the slide bearing (also called journal or plain bearings) type, are housed within the stern tube, a hollow structure that also contains seals and may be filled with oil, grease, or water.
Common materials for stern tube bearings include Cast iron with white metal lining (oil or grease lubrication), The white metal (lead or tin based) provides a bearing surface.
These bearings are located inside the stern tube, which is a tube-like structure extending from the engine room through the stern of the ship and housing the propeller shaft.
Stern tube bearings primarily support the propeller shaft and protect it from wear. They create a lubricating film (usually oil) between the bearing and the shaft to minimize friction and wear.
