Bevel gears transmit torsional, bending, and axial loads to rotating shafts. For this problem, the free body diagram for a shaft ABC is shown in the figure, where points A and C are at the bearings. Line BG is on the bevel gear extended to the shaft center from point G, the contact point with the mating gear. Transmitted from the mating gear are tangential, radial, and axial forces FyG=500 lbf, FzG=58 lbf, and FxG=173 lbf, respectively. The bearing at C supports the axial thrust load. For the shaft material, Su = 90 kpsi, Sy = 65 kpsi, and has a fully corrected endurance limit of 40 kpsi. Let (Kf)a = 2.3, (Kf)b = 2.0, and (Kfs)t = 1.5, where the subscripts a, b, and t represent axial, bending, and torsion, respectively. The diameter of shaft ABC is 1.3 in.

Bevel gears transmit torsional bending and axial loads to rotating shafts For this problem the free body diagram for a shaft ABC is shown in the figure where po class=