Repeat Problem 13.21, using the charts, rather than Petroff's equation, and also determine the minimum oil film thickness, h0, for (a) A bearing load of 500 N. (b) A bearing load of 5000 N.
Problem 13.21
A journal bearing 120 mm in diameter and 60 mm long has a diametral clearance of 0.20 mm. The journal rotates 3000 rpm and is lubricated with SAE 20 oil at an average temperature of 70°C. Using Petroff's equation, estimate the power loss and the friction torque.