Figure below shows part of a textile machine. Dimensions are in millimeters. The input power to...

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Figure below shows part of a textile machine. Dimensions are in millimeters. The input power to the system is 5 kW at shaft S, and has a speed of N, Twenty five percent of this power is transferred to shaft So through gear G₁, 30 % to shaft S: through gear G₂, and the rest to shaft S, through gear G₁ The output of shafts S, and S, is to the left and that of shaft S, is to the right. The following information is given for all gears: += 20°, N. = 1200 rpm, Tai = 22 teeth, Taz= 24 teeth, Tas = 60 teeth, Tax = 26 teeth, Tas = 22 teeth, T = 40 teeth, m, = 3 mm, m₂ = m₂ = 4 mm. All shafts are made of hot-rolled steel (S, = 650 MPa and Su = 800 MPa), and the gears are made of SAE annealed steel. a) Design shafts S₁, S₂, S₁, and S, completely for a safety factor of 2.5 against fatigue failure. b) Select the appropriate ball bearings for each shaft Figure 2. Problem # 2 75 250 450 200 250 Figure below shows part of a textile machine. Dimensions are in millimeters. The input power to the system is 5 kW at shaft S, and has a speed of N, Twenty five percent of this power is transferred to shaft So through gear G₁, 30 % to shaft S: through gear G₂, and the rest to shaft S, through gear G₁ The output of shafts S, and S, is to the left and that of shaft S, is to the right. The following information is given for all gears: += 20°, N. = 1200 rpm, Tai = 22 teeth, Taz= 24 teeth, Tas = 60 teeth, Tax = 26 teeth, Tas = 22 teeth, T = 40 teeth, m, = 3 mm, m₂ = m₂ = 4 mm. All shafts are made of hot-rolled steel (S, = 650 MPa and Su = 800 MPa), and the gears are made of SAE annealed steel. a) Design shafts S₁, S₂, S₁, and S, completely for a safety factor of 2.5 against fatigue failure. b) Select the appropriate ball bearings for each shaft Figure 2. Problem # 2 75 250 450 200 250