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A mild steel shaft has to transmit 100 hp at 200 rpm. Design a cast iron flange coupling for the shaft. The allowable stresses are as follows:

Shear stress for shaft and key = 40 N/mm2

Shear stress for bolts = 28 N/mm2

Shear stress for C.I. coupling = 20 N/mm2

Take bearing stress as twice the shear tress value and number of bolts for the coupling as 6. Sketch the Coupling showing various dimensions.

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