Magnetic particle inspection is preferred because it is more sensitive when properly.
Oil lubricated bearings will have a maximum recommended by the maker - controlled by design limitations, stress, alignment and loading.
Oct 23, Shaft diameter greater than mm, maximum mm (") A water lubricated synthetic shaft bearing for a shaft diameter of mm (24") has a maximum recommended clearance of mm, and an expected life of 20 years. 2. The jumping clearance is required to prevent damage to the steering gear, regardless of rudder type. STERN BUSH CLEARANCE / POKER GAUGE READINGS Examination of shaft seals and Confirmation that stern bush clearance / poker gauge readings recorded now and reflected in survey status are considered to be satisfactory.
GENERAL CONDITION. Nov 16, Special consideration shall be given to ascertaining rudder bearing clearances and stern bush clearances based on the operating history, on board testing and stern L.O.
analysis. The In water Survey is to be carried out at an agreed geographical location, with the ship at a suitable draught in sheltered waters and with weak tidal streams and currents.
Any cracking or slackening of the liner especially all, next to propeller or loosening of copper joints will result in corrosion of the shaft.
Jan 01, Measured clearance circle in water lubricated main shaft bearing with polymer bearing bush. Shaft diameter mm. Bearing bush wall thickness stumpcutter.bar different clearance circle are Author: Wojciech Litwin.
The clearance in the stern bush and the efficiency of the oil gland should be ascertained. In the case where a controllable pitch propeller is fitted, it is to be ascertained that the pitch control device is in good working order, and, if considered necessary, the device is to be opened up for further examination."Estimated Reading Time: 11 mins.