### Solved Problems: Design of Shafts and Couplings

Solved Problems: Design of Shafts and Couplings. A line shaft rotating at 200 rpm is to transmit 20 kW power. The allowable shear stress for the shaft material is 42 N/mm2. Determine the diameter of the shaft. Let d = Diameter of the shaft. Find the diameter of a solid steel shaft to transmit 20 kW at 200