Face Gear - Drive for Coaxial Propellers 14 December 2016, 22:00 Sorry, your browser doesn't support embedded videos, but don't worry, you can download it and watch it with your favorite video player! Drive for coaxial propellers The yellow shaft is input. Face gears help forgive error in manufacturing and alignment, thermal and vibration changes for the meshing parts. « previous mechanism Pump With -Bar Mechanism next mechanism » Machine Tool Fixture load comments Please enable JavaScript to view the comments.