Problem 3: (40 pts) The shaft shown in figure below is loaded by a 2500 N lateral force and a 540 N axial force. It is desired to mount the shaft

using a straight cylindrical roller bearing at location A and an angular-contact ball bearing at location B. The bearings desired life is 30 khrs life at 300 rpm with a single bearing reliability of 0.96 and a load factor of 1.2. a) Taking into account the bearing type, calculate the radial and axial (thrust) forces on the bearings, Far, FA, FBr, and FBa- b) Select the most economical 03-series straight cylindrical roller bearing ID size at A. c) Select the most economical single-row angular contact bearing ID size at B. Hint: Use data from Tables (11-2 and 11-3) for the selection. 2500 N 260 mm 740 mm Shaft Bearing B Angular contact bearing Thrust =540 N Bearing A Straight cylindrical roller bearing