An apparatus is described for producing a frictional and/or form-fitting connection between two components which are arranged such that they can be moved linearly or rotated relative to one another, for the purpose of transmitting forces and/or force moments which act in a linear and/or rotational manner between the two components, of which the first component surrounds the second component at least in sections with at least one inner wall which faces the second component, and the second component provides at least one active-face element which can be transferred in a force-loaded manner from a first position, in which the active-face element is spaced apart from the inner wall, into a second position, in which the active-face element enters the frictional and/or form-fitting connection with the inner wall. The invention is distinguished by the fact that at least one mechanical stressing element is provided which deploys a restoring force on the active-face element, which restoring force holds the active-face element in the first position, and by the fact that a kinematic system is provided which acts on the active-face element counter to the restoring force, is driven exclusively by a converter material and transfers the active-face element into the second position.