A telescopic lifting device for linear guidance of loads, the device comprising: an outer tube , an inner tube , a piston provided within the inner tube and guiding means , wherein at least part of the inner tube is guided within the outer tube ; the piston is configured to move the inner tube axially relative to the outer tube ; the guiding means is connected to the outer tube at the free end of the telescopic lifting device , characterized in that : the inner end of the inner tube is provided with rollers that are slidingly supported along their rotational axes so as to guide the inner tube axially with respect to the outer tube ; the guiding means comprises rollers that are slidingly supported along their rotational axes so as to axially guide the inner tube relative to the outer tube through the guiding means ; the inner tube comprises at its outer surface a plurality of guide rails , each of which is received in a groove ; the outer tube comprises at its inner surface a plurality of guide rails , each of which is received in a groove ; the rollers of the guiding unit of the outer tube are arranged so as to roll off on the guiding rails of the inner tube; and the rollers of the inner tube are arranged so as to roll off on the guiding rails of the outer tube . an outer tube , an inner tube , a piston provided within the inner tube and guiding means , wherein at least part of the inner tube is guided within the outer tube ; the piston is configured to move the inner tube axially relative to the outer tube ; the guiding means is connected to the outer tube at the free end of the telescopic lifting device , characterized in that : the inner end of the inner tube is provided with rollers that are slidingly supported along their rotational axes so as to guide the inner tube axially with respect to the outer tube ; the guiding means comprises rollers that are slidingly supported along their rotational axes so as to axially guide the inner tube relative to the outer tube through the guiding means ; the inner tube comprises at its outer surface a plurality of guide rails , each of which is received in a groove ; the outer tube comprises at its inner surface a plurality of guide rails , each of which is received in a groove ; the rollers of the guiding unit of the outer tube are arranged so as to roll off on the guiding rails of the inner tube; and the rollers of the inner tube are arranged so as to roll off on the guiding rails of the outer tube . the inner end of the inner tube is provided with rollers that are slidingly supported along their rotational axes so as to guide the inner tube axially with respect to the outer tube ; the guiding means comprises rollers that are slidingly supported along their rotational axes so as to axially guide the inner tube relative to the outer tube through the guiding means ; the inner tube comprises at its outer surface a plurality of guide rails , each of which is received in a groove ; the outer tube comprises at its inner surface a plurality of guide rails , each of which is received in a groove ; the rollers of the guiding unit of the outer tube are arranged so as to roll off on the guiding rails of the inner tube; and the rollers of the inner tube are arranged so as to roll off on the guiding rails of the outer tube . <EOS>