The ratio of bearing width to diameter is B/d. As B/d increases, bending deformation of the shaft or tilting of the shaft bore tends to cause localized contact between the journal and the end of the shaft tile, resulting in severe wear and heat generation. when B/d>1.5, it is recommended to use self-aligning bearings. This kind of bearing is characterized by the combination of the spherical surface of the bearing and the inner surface of the housing and bearing cover, and its spherical center is on the axis of the journal, so when the shaft is bent, the axle tile can be automatically adjusted to meet the alignment requirements of the journal.
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