Drive unit with axial play-free bearing device

In particular a drive unit for adjusting the components of the movable in a vehicle (10), by a drive device (42) comprises a drivable drive element (18), the driving element (18) is at least 1 one of which is rotatably supported by the supporting tube (14) with the bearing body (28), the driving element (18) has a first stopper (23) in the axial direction, said stopper support tube ( supported by a first bearing surface in the axial direction of 14) (21), further drive element (18) has an axial second stopper (35), said stopper axially of the bearing body (28) the second is in contact with the bearing surface (27), and the bearing body (28) supporting tube second axially drive element (18) with a material deformation forming portion (14) (82) It is pressed toward of the stopper (35).