A helical pinion has a normal pressure angle of 20, a transverse pressure angle of 25,...

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A helical pinion has a normal pressure angle of 20°, a transverse pressure angle of 25°, and rotates at 2000 rev/min. It is to drive a meshing helical gear so that the speed ratio is . The centers of the shafts are 10 in apart. Determine the normal diametral pitch and the pitch diameters if the pinion has 20 teeth. For the gears shown in Figure P7.1, label the rotations of each gear and also indicate the direction of the thrust load for each gear if shaft C is the input and rotates counterclockwise as observed from the left. Figure P7.1 RH LH 4 3 LH RH 2 C B A A helical pinion has a normal pressure angle of 20°, a transverse pressure angle of 25°, and rotates at 2000 rev/min. It is to drive a meshing helical gear so that the speed ratio is . The centers of the shafts are 10 in apart. Determine the normal diametral pitch and the pitch diameters if the pinion has 20 teeth. For the gears shown in Figure P7.1, label the rotations of each gear and also indicate the direction of the thrust load for each gear if shaft C is the input and rotates counterclockwise as observed from the left. Figure P7.1 RH LH 4 3 LH RH 2 C B A

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1 Given Pinion rotates at 2000 rpm Speed ratio is 21 Pinion normal pressure ... View the full answer