Assume that all gear blanks are solid circular cylinders unless specified otherwise.
Two 20° full-depth gears are made of through-hardened steel of grade 1 and are operated with HPSTC loading. Both gears have BHN = 200 and are manufactured to be of AGMA quality No. 8. The gears have solid disks and operate at a temperature of no more than 180°F. If the pitch line velocity is 395 ft/min, N1 = 358, N2 = 135, Pd = 4, and the face width is 3 in., find the maximum horsepower the gears could theoretically transmit. If this horsepower is exceeded, what would you predict to be the mode of failure?
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