Stern tube for ship propeller power measurement system and said measurement system

摘要

To provide a propeller power measuring system capable of measuring propeller power with a desired high accuracy even when the revolution of a propeller is at a relatively low speed, and a stern tube for the propeller power measuring system.SOLUTION: Provided is a propeller power measuring system which measures propeller power by having a propeller shaft 5 penetrating inside a stern tube 6, being pivotally supported by bearings on both end units in the axial direction of the stern tube, and connecting with a propeller by being protruded underwater from a hull. Thrust torque unbound type bearings 20 with low axial direction friction and rotational direction friction are used as bearings provided in the stern tube for the propeller power measuring system.SELECTED DRAWING: Figure 4