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Unformatted text preview: calculated in part (e), if you desire a life of 50,000 hours with at least a reliability of 90 percent, what bore size is needed for a deep grove bearing? (be careful on units of force) g) (2 pt) If the gears were helical instead of spur gears, say in words how this would change your bearing design. Problem 2 Given the diagram below determine the speed (in RPM) and the direction (+ or - y) of the output shaft, n 12 . N 1 = 2 Left Hand Threaded n 1 = 600 RPM y x N 2 = 10 D 4 = 7 N 8 = 3 N 5 = 11 N 9 = 4 N 6 = 6 D 11 = 5 N 7 = 9 N 10 = 13 D 3 = 8 D 12 = 10 n 12 = ??? (speed and direction) Crossed Belt Problem 3 The shown planetary gear has a sun gear 2 which rotates at 50 rad/sec and arm 6 rotates at 75 rad/sec, both clockwise as viewed from the left. Determine the magnitude and direction of the angular velocity of the sun gear 5....
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This note was uploaded on 07/22/2010 for the course ME Mecheng 35 taught by Professor 350 during the Winter '08 term at University of Michigan-Dearborn.
- Winter '08