Crown wheel and pinion usually have the following features:
• Excellent heat distortion control
• High strength
• Wear resistance property and
• Noiseless and vibration free operation.
In a machine, when any torque is applied to the drive unit, the tendency is for the crown wheel and pinion to be forced into or out of mesh by the sliding contact. The amount of pre-load on the bearings determines how much torque can be transmitted without allowing end float, which cause the meshing of the gears to become incorrect.