The present invention comprises a contour (15, 89) substantially in the rotor body (3, 73) of a torus having an end surface (11, 91) having an axially extending, said contour (15, 89) is a rotor unit relates to (3, 73), the camshaft (31, 112) to the shaft exactly one position has an asymmetric such that pre-defined, camshaft adjustment appointed rotor (1, 71) for the direction of the connection. A rotor (1, 71) with the shape of the contour (15, 89) allow mainly the additional savings on the way catch cam (31, 112) and is able to be easily implemented in terms of manufacturing technology. The present invention also relates to a camshaft adjuster (111) having a rotor (1, 71) of the.