Estimate forces on the shaft:

A bevel gear train contains two gears. The pressure angle of the gear pair is 20^o. 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 'T_i' = 8 kN cm = 8000 N cm

Pitch cone angle for the pinion

or         γ₂  = 36.87^o

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.