A 10-pitch, 20-degree full-depth involute gearset, with Qv=10 and a face width of 1.25 inches, is being proposed to provide a 2:1 speed reduction for a conveyor driver unit. The 18-tooth pinion is to be driven by a 15-hp, 1725-rpm electric motor operating steadily at full-rated power. A very long life is desired for this gearset, and a reliability of 99% is required.
a) Using the AGMA refined approach, calculate the tooth bending stress at the tension-side root fillet of the driving pinion, as well as the tension-side root fillet of the driven gear.
b) Using the AGMA refined approach, calculate the surface fatigue contact stress for the meshing gear tooth.