Question

An engine shaft is transmitting 1000 W at a rotational speed of 125 rpm by means of belt drive. A pulley with 0.2m diameter weighs 0.2kN, is mounted 300 mm from the center of the bearing. The angle of contact between the belt and pulley is π rad and the value of µ is

0.3. The shock and fatigue factors for bending and twisting are 1.5 and 2.0 respectively. The allowable shear stress and bending stress in the shaft may be taken as 35 MPa and 46 MPa respectively. Design the safe diameter of the shaft.

Answer 1

Answer:

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