PTM-Parallel Grippers are based on the
rack-and-pinion principle like our rotating actuators. (picture 2) This fact
allows for a compact design with small dimensions and low weight while still
offering a high grip force. The rack and pinion design produces an even
clamping force over the whole range. The clamping jaws are absolutly centered
in each position. Shortest clamping times are possible. Each base jaw is
connected tightly with one rack. This creates the great advantage that the jaws
are firmly guided over the whole length of the gripper. This long jaw guidance
guarantees close tolerance, high precission and long life. It is possible to
work with very long clamping fingers without any problems. This advantages are
enhanced in the alternative -PSMUthe PTM-Parallel Gripper with u-shaped jaws.
Another option is the use of a spring in our Parallel Grippers, model ZFS, to
secure the grip force during air pressure failure. With this it is possible to
work only with one air connection. Our Multi Position Cylinders -ZMZ- offer as
many as two additional stops or additional strokes, which is very important in
case of space restrictions. The „Attachment for centering“ guarantees an exact
exchange or a quick change position of the Parallel Gripper.
