2-Jaw Gripper:
The most popular style of gripper, all 2 jaw grippers (angular, parallel and toggle) provide 2 mounting locations for the fingers that come in contact with the part to be grasped. This jaws move in a synchronous motion opening and closing toward the central axis of the gripper body.
3-Jaw Gripper:
A more specialized style of gripper, all 3 jaw grippers provide 3 mounting locations for the fingers that come in contact with the part to be grasped. The jaws move in synchronous motion opening and closing toward the central axis of gripper body. 3-jaws provide more contact with the part to be grasped and more accurate centering than 2 jaw models.