A minimum-sized bearing that is consistent with reported current practice is desired for a steady load. SAE 20 oil is to be used, and the average film temperature is expected to be at 160°F. A ratio of L/D = 1 is required. The journal bearing is to be designed to carry a radial load of 1500 lb at 1200 rpm.
(a) Determine the values of L and D.
(b) Determine values of c corresponding to the two edges of the optimum zone in Figure 13.13.
(c) Does the value of c for minimum friction satisfy Trumpler's criterion for minimum acceptable film thickness?
