A 50-tooth spur gear is in mesh with a 27-tooth pinion. The gears have a diametral...

A 50-tooth spur gear is in mesh with a 27-tooth pinion. The gears have a diametral pitch of 5 teeth/in, and a pressure angle of φ = 25°. The gears transmit 80 HP at 4000 pinion rpm.

Find the factors of safety against bending and surface failure. Assume that the teeth are full depth, Qv = 10, a through hardened to 360 HB steel gear, and a carburized and case hardened steel pinion. Assume a face width of 3.0 in, a 99.9% reliability, and a life of 9 5 10 × cycles.

Expert Solution

Note - Standard AGMA tables have been used and please give feedback. I used AGMA table from Norton book but the tables are standard and can be found online. These tables are used by me to calculate the factors.

samet mamat answered 2 years ago

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