Power is transmitted between two pulleys mounted on the parallel shafts rotating in the opposite direction. The pulleys are separated apart at a distance of 1950mm having 0.45m and 0.2m diameter respectively. What power can be transmitted by the belt when the larger pulley rotates at 200 rev/min, if the maximum permissible tension on the tight side of the belt is 1000 N, and the value of µ between the belt and pulley is 0.25. Design the length of the belt required and the angle of contact between the belt and each 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.