1. A straight-toothed full-depth involute spur pinion with a pitch diameter of 100 mm is mounted on an input shaft driven by an electric motor at 1725 rpm. The motor supplies a steady torque of 225 N-m. a. If the involute gear teeth have a pressure angle of 20, determine the transmitted force, the radial…

1. A 10-pitch 20 full-depth involute gearset with a face width of 1.25 inches is being proposed to provide a 2:1 speed reduction for a conveyor drive 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…

1. Using the simplified approach (do not refine results by using AGMA equations), design a single-reduction straight spur gear unit to operate from a 5.0-hp electric motor running at 900 rpm to drive a rotating machine operating at 80 rpm. The motor is to operate steadily at full rated power. Near-infinite life is desired. A…

1. A 10-pitch 20 full-depth involute gearset, with and face width of 1.25 inches, is being proposed to provide a 2:1 speed reduction for a conveyor drive 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…

1.For the gearset specifications of  do the following: a. Using the AGMA refined approach, calculate the surface fatigue contact stress for the meshing gear teeth. b. If the proposed material for both gears is AISI 4620 steel, and the teeth are carburized and case hardened (not including the root fillet) to a hardness of approximately…

1. Using the AGMA refined approach, design a high-precision single-reduction straight spur gear unit to operate from a 50-hp electric motor running at 5100 rpm to drive a rotating machine operating at 1700 rpm. The motor operates steadily at full rated power. A life of 107 pinion revolutions is desired, and a reliability of 99…

1. An existing parallel-shaft single-reduction spur gear speed reducer is made up of a 21-tooth 8-pitch input pinion driving a 73-tooth gear mounted on the output shaft. The center distance between pinion and gear is 5.875 inches. The input shaft is driven by a 15-hp, 1725-rpm electric motor operating steadily at full rated capacity. To…

1.For the Coniflex® bevel gearset described in problem 15-53, the following information has been tabulated or calculated: 630 in-lb 6 2.50 inches 1.15 inches 15 teeth 45 teeth Further, it is proposed to use Grade 2 AISI 4140 steel nitrided and through-hardened to BHN 305 for both the pinion and the gear. Other known design…

1.A proposed worm gearset is to have a single-start worm with a pitch diameter of 1.250 inches, a diametral pitch of 10, and a normal pressure angle of 14 . The worm is to mesh with a worm gear having 40 teeth and a face width of 0.625 inch. Calculate the following: a. Axial pitch…

1.A double-start worm has a lead of 60 mm. The meshing worm gear has 30 teeth, and has been cut using a hob having a module of 8.5 in the normal plane. Do the following: a. Calculate the pitch diameter of the worm. b. Calculate the pitch diameter of the worm gear. c. Calculate the…