What does "single-action" or "double-action" mean?

faq_eoat_single-action_double-action

Single-action grippers or air nippers are automatically restored to the initial position by a compressed spring, i.e. it is sufficient to apply compressed air to operate the gripper or the air nipper.


Double-action grippers or air nippers have separate compressed air connections for opening and closing. They are especially suited for short duty cycles as they do not rely on the reset time of a return spring.