A full journal bearing is required for a shaft rotating at 1450 rpm. The lubricant can be supplied at an inlet temperature of 60 oC using an available cooling system.

1.1 Determine the overall temperature rise in the bearing using the methods of:

1.1.1 Raimondi and Boyd 1.1.2 Reason and Narang

1.2 Determine the flow rate of lubricant required.

Assume the following: The lubricant is SAE 10 L/D ratio of unity. Shaft nominal diameter = 40 mm. Load on the bearing = 2100 N. Show all the calculations.

30 marks