The invention relates to a chain link for a circular chain and to the circular chain for accommodating and guiding energy lines between two connections points that can be moved in relation to each other, in a circular motion about an axis of rotation (d). The circular chain has a circular-arc-shaped body having a circle center-point axis (k), which body is composed of a plurality of sector-shaped chain links adjoining each other in the circumferential direction, wherein the chain links are connected to each other in the adjoining connection regions thereof in such a way that, in each case, the chain links can be pivoted about a first pivot axis (s1) radial to the circle center-point axis (k). The chain link is designed to form a hinge-joint connection with the joint partner and has at least one connection region designed as a first connection region, which connection region is designed in such a way that the hinge-joint connection enables at least one further relative motion of the joint partners in addition to the pivoting about the first pivot axis (s1).