The present invention relates to a camshaft adjuster for an internal combustion engine (1), the driving wheel (2), the relative angular relationship between the driven elements that are assigned to the cam shaft, an outer rotor (3 ) and is adjustable by hydraulic loading of the pressure chambers (9, 10) between the inner rotor (6), the driving wheel (2) has been manufactured from plastic, it is associated arranged to drive vehicle (2) outer rotor (3) is about of the type which is manufactured from metal.
In the camshaft adjuster in such form, especially for reducing the diversity in and for assembling to obtain a good bond forms, in the configuration of the present invention, between the outer rotor (3) and the inner rotor (6) At least one bearing surface (4) has been received in material connection type or form-expression in a plastic driving wheel (2).