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Problem (5) A muff coupling is connecting two shafts for transmitting 650 Nm torque. The shafts' diameter is 45 mm and the square key

Problem (5) A muff coupling is connecting two shafts for transmitting 650 Nm torque. The shafts' diameter is 45 mm and the square key dimensions are 14 mm width and 110 mm length. Find the following:- a- Muff outer diameter (its material is cast iron of 30 MPa allowable shear strength) b- Key stresses (shear and crushing)

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