The figure shown below represents a V-Belt drive system. Pulley #1 in the figure has a radius of 3 in and is being rotated by an electric motor delivering 5 hp at 1725 rpm. Pulley #2 has a radius of 14 in and is connected to the input shaft of a reduction gearbox having a gear ratio of n = 2.75. The output shaft of the gearbox drives a grain auger. If there is a 16% power loss for the entire V-Belt and reduction gearbox drive system, what torque (expressed in units of lb ft) is applied to the auger shaft and what is the rotational rate of the auger shaft (in units of rpm)? Pulley #1 (Drive Pulley) Pulley #2 (Driven Pulley)

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Design of Shafts and Shaft Components

The shaft is basically defined as the machine element that rotates, is in circular cross-section, it is majorly used to transfer the power from one part of the system to another, or from a power generating machine to a power absorbing machine. The shaft is supported on bearings and is rotated with the help of a set of gears or pulleys that are used for the power transmission. Bending moment, torsion, and an axial force act upon the shaft. Designing of shaft primarily involves determining stresses at a critical point in the shaft that is arising due to loading.