Bath tub lifters, comprising:a seat element (1),a lifting device (4) for raising and lowering of the seat element (1) between a lower operating end position and an upper operating end position anda lifting scissors arrangement (10) comprising two pairs of lifting scissors with shear elements (21, 31),wherein, in the ready-to-operate state in each case two scissor elements (21, 31) can be pivoted about a pin with respect to each other are coupled to one another,characterized by the,that on an inner scissor element (21) on the inside a bearing element (120) is provided,that on an outer scissor element (31) on the outside a bearing element (130) is provided,that the bearing is designed in such a way that the bearing inner element (120) and the bearing the outside element (130) when the inner scissor element (21) and the outer scissor element (31) in a mounting - angular position relative to one another, by bringing in the radial direction can be brought into a functional position in which the bearing inner element (120) and the bearing the outside element (130) are aligned coaxially with respect to the bearing axis, andthat the shear elements (21, 31) in the state ready for operation by means of an operating range between the lower operating end position and the upper operating end position is not the assembly - angular position relative to one another and a separation in the radial direction is prevented by positive fit.
