Finger contacts with several spring-loaded single fingers enable a good contact even when the contact surface at the carrier is not smooth. Ideally the contact fingers are equipped with wiper grooves to clean off loose dirt when the carrier enters. To tie the movable elements to the basic body foil tapes are used.
Pneumatic finger contacts
Using a pressure bag for the pneumatic finger contacts it is possible to increase the contact pressure in order to reach a better contact. Especially in existing installations the contact surface of the carrier is often uneven. In this case it is advisable to opt for contacts with pneumatic fingers.