A transmission shaft, supporting two pulleys A and B and mounted between two bearings C1 and C2 is shown in Fig. Power is transmitted from pulley A to B. The shaft is made of plain carbon steel 45C8 (Sut = 600 and Syt = 380 N/mm2). The pulleys are keyed to the shaft. Determine the shaft diameter using the ASME code if, kb=1.5 and kt=1.0

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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.