An electric motor delivers 5 HP to a hydraulic pump with an overall efficiency of 90%. The pump provides oil flow to a 3-inch diameter hydraulic cylinder used to press a bushing into a bore, (a) If...

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Extracted text: An electric motor delivers 5 HP to a hydraulic pump with an overall efficiency of 90%. The pump provides oil flow to a 3-inch diameter hydraulic cylinder used to press a bushing into a bore, (a) If the pressing force is 3 US tons determine the required cylinder pressure in psi. (b) What is the pump flow rate in gpm? (b) What is the rod speed (in/sec) of the pressing cylinder as It extends? Assume the relief valve remains closed during pressing.