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Problem A1. A full journal bearing is 36 mm long. The shaft (journal) has a diameter of 75 mm with unilateral tolerance
Posted: Thu May 26, 2022 11:27 am
by answerhappygod
- Problem A1 A Full Journal Bearing Is 36 Mm Long The Shaft Journal Has A Diameter Of 75 Mm With Unilateral Tolerance 1 (20.34 KiB) Viewed 15 times
Problem A1. A full journal bearing is 36 mm long. The shaft (journal) has a diameter of 75 mm with unilateral tolerance of 0.02 mm. The bushing (bearing bore) has a diameter of 75.05 mm with unilateral tolerance of 0.08 mm. The load on the bearing is 2.5 kN and the journal rotates at 720 revs/min. SAE 40 lubrication oil is used at an average operating temperature of 60°C. For the minimum clearance, determine: (1) minimum film thickness (ii) the Power Loss (Watt) due to friction in the bearing (i). What must be the flow rate of the oil to maintain hydrodynamic lubrication?.