form an undercut viewed from stator front side 11 inwardly protruding projection 13 is elevated with respect to the diameter of opening 10 and therefore may also be referred to as an elevation camshaft 2 has a longitudinal axis 15 longitudinal axis 15 may also be referred to as the camshaft longitudinal axis or as the shaft longitudinal axis for short a plurality of cams 16 at least one camshaft bearing area 17 and a retaining section 18 are formed on camshaft 2 a cylindrical clearance 19 is formed on retaining section 18 of camshaft 2 a web 20 which may also be referred to as a nose protrudes or extends radially outwardly from clearance 19 an outer diameter 21 of web 20 may also be referred to as a centering diameter retaining section 18 camshaft bearing area 17 and cams 16 follow one another along longitudinal axis 15 starting from a front side 22 of camshaft 2 front side 22 may also be referred to as the camshaft front side or as the shaft front side web 20 axially adjoins front side 22 of camshaft 2 it is particularly advantageous for web 20 to directly adjoin front side 22 since this arrangement takes up little installation space in camshaft adjuster 1 a further web 23 may be formed at one end of clearance 19 at a distance from web 20 as shown in fig1 through 4 web 20 and clearance 19 form an undercut viewed from front side 22 a marking 24 is provided radially outwardly on stator front side 11 viewed from adjuster longitudinal axis 7 u2014 in the present case in the radial direction behind projection.