Finger joint Folded finger joint
These joints reduce the number of moving parts and wear points to provide a more direct transition of power for longer life and improved performance. When the hinge is folded up the fingers are still in contact to maintain proper alignment; then, when the fingers fold down, they lock into place.
The finger joints are supported by sealed bearings to reduce wear and vibration. This results in longer machine life, reduced downtime, and a more consistent delivery of torque to the outer rotors.