Thermal and elastic deformations are derived for a ring receiving heat input over a limited part of its inner circumference. This is applied to the problem of seizure of journal bearings or radial seals operating with dry or boundary lubricated contact. It is found that when the ratio of outer to inner radius for the ring is less than 1.715, seizure will not occur as a result of the mode of distortion studied. For thicker bearing/housing bodies there is always some load-speed combination which will lead to seizure, and this may occur in the range of common speeds and loads encountered in engineering applications.

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