Serious tooth misalignment can occur in the second reduction mesh of a typical ship’s main propulsion gear due to a crossed-axes condition between mating pinions and gear in operation when the gear has more static loading on one of its bearings than on the other. A maximum difference between static fore and aft gear bearing loadings is recommended and illustrated by presenting a few actual line-shaft arrangements. Variation of static bearing loadings with bearing position is shown by use of influence numbers. Alignment data and considerations that must be available to produce a good co-ordinated gear to lineshaft arrangement is reviewed. The alignment of steam turbines to main propulsion gears to compensate for thermal expansions and journal-reaction position is also described.


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    Titel :

    Co-ordinated alignment of line shaft, propulsion gear, and turbines 12


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.01.1965


    Format / Umfang :

    45 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Schlagwörter :


    Co-ordinated alignment of line shaft, propulsion gear, and turbines

    Anderson, H.C. / Zrodowski, J.J. | Engineering Index Backfile | 1959


    Alignment of main propulsion shaft bearings in ships

    Francis, J.J. / Kosiba, R.E. / Woollacott, R.A. | Engineering Index Backfile | 1956