A hushed pin-type flexible coupling is used to connect two shafts and transmit 5 kW power at 720 rpm. Shafts, keys and pins are made of commercial steel (S1 Se= 240 N/mm) and the factor of safety is...

A hushed pin-type flexible coupling is used to connect two shafts and transmit 5 kW power at 720 rpm. Shafts, keys and pins are made of commercial steel (S1 Se= 240 N/mm) and the factor of safety is 3. The flanges are made of grey cast iron FG200(S-200 N/mm²) and the factor of safety is 6. Assume Say=0.5 S and S=0.5 St There are four pins. The pitch circle diameter of the pins is four times of shaft diameter.The permissible shear stress for pins is 35 N/mm. The permissible bearing pressure forrubber bushes is 1 N/mm. The keys have square cross section.Calculate(a) Diameter of the shafts,Add to my libraryWrite reviewPaga 201Shafts, Keys and Couplings 2811(b) Dimensions of the key. (c) Diameter of the pins and(d) Outer diameter and effective length of the bushes.(Anx. (a) 22 (20.36) mm, (b) 6 x 6 x 33 mm, (c) 9 mm, (d) 20 (19.41) mm each)