STERN BEARINGS: REDESIGN FOR HEAVIER PROPELLERS

The Author, of Kockums, discusses the operation, lubrication, and dimensions of stern-tube bearings, with particular reference to those in large high-powered ships. Among the aspects examined are: difficulties in determining specific load in the bearing; finding the bearing length and shaft diameter (for a new ship) that provide the same conditions as in an existing trouble-free installation (with rational shaft-alignment), without determining the specific bearing pressure; significance of propeller mass; oil film pressures and their distribution, in relation to bearing length (the Author makes use of some data from the work of Asanabe et al, shaft deflection, inclination, and alignment; optimum length/diameter ratio for the bearing (this has been shown to be between 1 and 1.5, and the latter figure can now be accepted by some classification societies); oil-film thickness in relation to shaft rpm and to bearing clearance and length; metal-to-metal contact at low speeds. Order from BSRA as No. 49,665.

  • Corporate Authors:

    IPC Industrial Press Limited

    Dorset House, Stamford Street
    London SE1 9LU,   England 
  • Authors:
    • NIELSEN, B
  • Publication Date: 1978-8

Media Info

  • Features: References;
  • Pagination: p. 24
  • Serial:
    • Marine Week
    • Volume: 5
    • Publisher: IPC Business Press Limited

Subject/Index Terms

Filing Info

  • Accession Number: 00195383
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jul 31 1979 12:00AM