The effect of the direction of shaft inclination and its magnitude on journal sliding bearing performance

A shaft is often not parallel with its bearing in practical applications. This paper reports the effects of the direction of shaft inclination and its magnitude on a 360° full journal bearing with an LID of 0.5, and makes the following points. (1) Bearing performance was calculated using mesh points on the rotational and axial coordinates. A fine axial mesh has to be used when considering inclination in keeping the calculation accurate. (2) The load capacity, film thickness, journal locus, load capacity limit, moment load, and oil film coefficient are shown as design data in which the direction of shaft inclination and its magnitude are used as parameters. The performance is discussed by comparing it with the aligned cases. (3) The load capacity limit when the end eccentricity ratio was equal to 1 was calculated. This represents an important design index peculiar to the inclination film. We observed that inclination had a large influence on the load capacity limit and its angle of attitude.