Let the film arcs for three bearings be 120°, 180°, and 360°, respectively. Diameter is 90 mm and length is 113 mm. The load on the bearings is 8000 N. Speed = 900 rpm and film temperature is 74°C. SAE 10 oil is used; r/c ratio is 800. Find the minimum film thickness and the friction power loss. This problem shows that a reduction in film arc will give a reduction in the friction power loss, but that the film thickness will also be reduced.
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