There are five main reasons for the wear of babbitt alloy bearings in steam turbine

(1) The casting of the alloy layer has defects, there are microcracks or hidden dangers of shelling, the surface is rough, and there are pores inside, and it wears quickly after being put into operation.
(2) The bearing lining lubricating oil is not clean. There are sundries, or the circulating oil circuit is not smooth enough. The oil supply is not timely during operation, which increases the friction between the bearing bush and the journal, resulting in premature wear of the Babbitt bearing.
(3) Dust or material enters the bearing bush, causing premature wear of the Babbitt alloy bearing bush.
(4) The coordination between the bearing and the shaft is not good. The inner spherical surface of the bearing seat does not cooperate well with the spherical surface of the bearing, and the contact points are unevenly distributed, which makes the local wear of the main bearing faster.
(5) Mechanical overload increases the working load of the bearing pad and also causes premature wear of the bearing pad

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