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Browsing by Subject "sleewing bearing"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Zmiana obciążeń elementów tocznych w łożu kulowym zwałowarki wskutek zużycia odkształceniowego
    (Wydawnictwa AGH, 2011) Smolnicki, Tadeusz; Stańco, Mariusz
    Large size bearings with the monolithic and soft raceway are commonly used as a bearing for the main rotation of the basic surface mining machines body. The raceways of these bearings undergo a significant rolling, that changes the primary load distribution on the rolling elements of the bearing. The study presents the comparison of the rolling elements loading in the ZGOT 11500 conveyor for the new bearing as well as after five year bearing operation. The wear values are also presented. The loading distribution calculations were performed by the finite element method with the use of super-element type raceway-rolling element-raceway.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Zwiększenie nośności łożysk wielkogabarytowych metodą korekcji bieżni
    (2007) Smolnicki, Tadeusz; Przybyłek, Grzegorz; Stańco, Mariusz
    Large-size bearings of machine's revolution structure of basic surface mining machines pertain to the most effort subassemblies of the load carrying structure, which is a reason of a high and eccentric loading, insufficient rigidity of the supporting subassemblies as well as disadvantageous working conditions. Usually the technical possibility of providing the suitable rigidity of supporting subassemblies does not exist. The raceway correction method bases on the suitable forming the raceway bottom groove and the lifting it in the more flexible areas and lowering in the more rigid areas. As a result of above treatment the loading compensation of particular rolling elements as well as significant decrease of maximal loadings that decide about failure was obtained. The use of such a treatment enables the significant increase of bearing life. The correction treatment of bearing raceway is described on the ZGOT 11500.100 dumping conveyor example, that is being built for BOT KWB Turów SA mine at present.