(3) A flange coupling is to connect two 60mm shafts. The hubs of the coupling are Ø120mm, 100mm thick, & the flange webs are 20 mm thick. Six M16 bolts fasten the flange from a 165 bolt circle. The keyway is 15mm shorter than the hub's thickness & the key is 15mm x 15mm. The coupling transmits 45kW @ 450rpm. The yield point in shear for all materials is half of its yield point in tension or compression. Yield tensile strength is 0.75 of ultimate strength of the materials. The Sult is 448N/mm?. Find: (a) the shear stress in key; (b) the bearing stress in key; (c) the shear stress in bolts; (d) bearing stress in flange.

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Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.