Figures presented periodically by Classification Societies show a major cause of ship casualty to be stern bearing failure. This is particularly the case for large full-bodied bulk carriers and tankers. Non-uniform wake distributions around the stern of vessels causes uneven and constantly varying loads upon the bearing. These loads are examined and it is concluded that they may cause bearing or seal failures. Examination of stern bearing failures generally confirms this view. Examination of the loading pattern and requirements of stern gear are listed and, based upon these, it is argued that stern bearing reliability will be increased if hydrostatic stern bearings are used. Design curves to a basis of shaft diameter are presented to enable clearance, pressure, lubricant flow, stiffness and basic dimensions to be derived by simple calculation. Material suggestions are made and outline designs for oil and water lubricated bearings presented.

  • Corporate Authors:

    North East Coast Inst of Engineers & Shipbuilders

    Bolbec Hall, Westgate Road
    Newcastle upon Tyne,   England 
  • Authors:
    • Rose, A
  • Publication Date: 1974-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00057313
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Aug 28 1974 12:00AM