Oil Lubricated Steel Stern tube with White Metal Lined Bearings:
Oil lubricated stern tube are specially design for steel vessel which are welded directly to hull. The design is well taken in consideration to minimize deformation due to welding of heat. Oil lubricated stern tube required AFT & FWD seals with oil circulating systems.
Water Lubricated Bearing Steel Stern tube
This type of stern tube is directly welded to hull. These stern tubes are supplied with AFT strut which are welded to boat. The stuffing box is mounted by means of a flange on the forward section of stern tube.