Example 9.6 A transmission shaft supporting a helical gear B and an overhung bevel gear D is shown in Fig. 9.10. The shaft is mounted on two bearings, A and C. The pitch circle diameter of the helical gear is 450 mm and the diameter of the bevel gear at the forces is 450 mm. Power is transmitted from the helical gear to the bevel gear. The gears are keyed to the shaft. The material of the shaft is steel 45C8 (Sut = 600 and Syt = 380 N/ mm²). The factors k₁ and k, of ASME code are 2.0 and 1.5 respectively. Determine the shaft diameter using the ASME code. A 400 270 250 640 B 400 400 210640 100