Calculate the Sommerfeld number for a sleeve bearing (θ = 360) carrying a design load of 2.9 kN at a rotational speed of 600 rev/min. The bearing diameter is d = 40 mm, the bearing length is I = 0.6d, and the diametral clearance is 1 μm per mm of the bearing diameter d. SAE 30 oil is used, with a mean temperature of 72°C.
Your answer should be accurate to 3 d.p.
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0.053 margin of error +/-0.005