Abstract: A drive unit, which has a first motor and a second motor, for rotationally and linearly moving a working element with respect to a first housing element. In order to permit a design and a mounting and to reduce the required axial installation space and cost, the drive unit has bearing arrangement which, in the case of a linear movement of the working element with respect to the first housing element, permits a primary part and a secondary part of the first motor and/or of the second motor to be arranged in an axially non-displaceable fashion.