For the shaft application defined in Prob. 379, p. 139, the input shaft EG is driven at

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For the shaft application defined in Prob. 3€“79, p. 139, the input shaft EG is driven at a constant speed of 280 rev/min. Obtain a Basic Load Rating for a cylindrical roller bearing at A for a life of 14 kh with a 98 percent reliability.
Prob. 3€“79, Repeat Prob. 3€“77 with T = 900 lbf · in, a = 6 in, b = 5 in, c = 10 in, d = 1.375 in, e = 4 in, f = 10 in, and g = 6 in.
Repeat Prob. 3€“77, A torque T = 100 N · m is applied to the shaft EFG, which is running at constant speed and contains gear F. Gear F transmits torque to shaft ABCD through gear C, which drives the chain sprocket at B, transmitting a force P as shown. Sprocket B, gear C, and gear F have pitch diameters of a = 150, b = 250, and c = 125 mm, respectively. The contact force between the gears is transmitted through the pressure angle φ = 20°. Assuming no frictional losses and considering the bearings at A, D, E, and G to be simple supports, locate the point on shaft ABCD that contains the maximum tensile bending and maximum torsional shear stresses.

For the shaft application defined in Prob. 3€“79, p. 139,

Combine these stresses and determine the maximum principal normal and shear stresses in theshaft.

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Shigleys Mechanical Engineering Design

ISBN: 978-1121345317

9th edition

Authors: Richard G. Budynas, J. Keith Nisbett

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