lateral surface of rolling bearing inner ring 51 pressure medium transfer element 40 is formed in particular in a section of rolling bearing inner ring 51 which is axially elongated with respect to rolling bearing outer ring 52 and rolling bearing ball cage ring 53 rolling bearing inner ring 51 43 includes an outer annular channel 51 b 41 having a radially outer annular channel opening 411 and an inner annular channel 51 a 45 having a radially inner annular channel opening 452 as well as radial channels 51 a u2032 42 which 51 a u2032 42 connect annular channel 51 b 41 having radially outer annular channel opening 411 to annular channel 51 a 45 having radial inner annular channel opening 452 moreover rolling bearing inner ring 51 43 includes sealing rings 51 c 44 and sealing ring receptacles 51 d 46 which extend essentially in parallel to both sides of outer annular channel 51 b 41 rolling bearing inner ring 51 is thus used as a tubular base body 43 of pressure medium transfer element 40 its 51 annular channels 51 a 51 b radial channels 51 a u2032 sealing rings 51 c and sealing ring receptacles 51 d being used as annular channels 41 45 radial channels 42 sealing rings 44 and sealing ring receptacles 46 of pressure medium transfer element 40 within the scope of the specific embodiment illustrated in fig4 camshaft 10 itself is designed to transfer hydraulic pressure medium p from a stationary component 30 to a rotatable component 10 the specific embodiment illustrated within.