Estimate forces on the shaft:
A bevel gear train contains two gears. The pressure angle of the gear pair is 20o. The torque input to the gear 2 is as 8 kN cm. The gear train is illustrated in Figure 9. Estimate forces on the shaft at A & B, the bearings A & C take side thrusts.

Figure 9
Solution
Torque input 'Ti' = 8 kN cm = 8000 N cm
Pitch cone angle for the pinion

or γ2 = 36.87o


Taking moments around the Z-axis at point B


Figure 10
Taking moments around Y-axis passing through O

The components at the bearing A & B have been calculated. If obligation arises their resultant also may be calculated.