The motor shown supplies 126 hp at 1340 rpm at A. Shafts (1) and (2) are each solid 1.86-in.-diameter steel [G11400 ksi] shafts w lengths of L₁ = 79 in. and L₂ = 105 in., respectively. Assume Ng-27 teeth and N-42 teeth. The bearings shown permit free rotation the shafts. (a) Determine the maximum shear stresses T₁, T2 produced in shafts (1) and (2). (b) Determine the rotation angle DA of gear D with respect to flange A. Nc NB TD

In a gear set, a 36-tooth spur pinion drives a 60-tooth spur gear. The teeth of these gear are cast iron profile. The diametral pitch is 6-teeth/in, the face width si 0.5 inches, and the pressure angle is 20 degrees. Assume that the pinion transmits 10 hp at a speed of 2000 rpm. Find the tangential load in lbf Find the contact stress in kpsi, assuming CP=1960 psi.

(8) An axle (non-rotating) is to be machined from AISI 1144, OQT 1,000°F, to the proportions keyway в shown, with a fillet radius r = 0.2D; F varies 1.SD from 400 lb. to 1,200 lb.; the supports are to the left of B, not shown. Let N = 2 (Soderberg Line). 6" (a) At the fillet, compute D and the 30 maximum tensile stress. (b) Compute D at section B. (c) Specify suitable dimensions. Keeping the given proportions, would a smaller diameter be permissible if the fillet were shot-peened?