A table group for a machine tool intended to rest on a horizontal reference plane, comprising: - a support assembly comprising a support comprising an annular wall delimiting an inner compartment; - a table supported by the support assembly, rotationally about a vertical rotation axis; - a main biasing portion (20; 120) provided with a lower face (20',120') and a secondary biasing portion (20;220) provided with an upper face (20",220"), which are joint with the table; characterised in that it further comprises - a plurality of main hydrostatic skids, fixed to the support assembly, adapted to support the table by means of pressurized fluid, thus generating a lifting action, each main skid being configured to form a main pressure chamber with the lower face (20';120') of the main biasing portion (20;120), in which a meatus which supports the table is formed; - detection means adapted to detect the lifting action generated by the main skids; - a plurality of dogs fixed to the support assembly, adapted to push the table towards the main skids by means of pressurized fluid, thus generating a contrasting action, wherein each dog comprises a hydrostatic secondary skid, each secondary skid being configured to create a secondary pressure chamber with the upper face (20";220") of the secondary biasing portion (20;220), in which a meatus which pushes the table towards the main skids is formed; - electronic management means operatively connected to the main skids, the dogs and the detection means, configured to control the dogs so as to generate a contrasting action such that the lifting action is equal to a predetermined constant nominal load (P*), which is greater than the weight of the semi-finished product and either smaller than or equal to a maximum load (Pmax) which can be borne by the main skids. - a support assembly comprising a support comprising an annular wall delimiting an inner compartment; - a table supported by the support assembly, rotationally about a vertical rotation axis; - a main biasing portion (20; 120) provided with a lower face (20',120') and a secondary biasing portion (20;220) provided with an upper face (20",220"), which are joint with the table; - a plurality of main hydrostatic skids, fixed to the support assembly, adapted to support the table by means of pressurized fluid, thus generating a lifting action, each main skid being configured to form a main pressure chamber with the lower face (20';120') of the main biasing portion (20;120), in which a meatus which supports the table is formed; - detection means adapted to detect the lifting action generated by the main skids; - a plurality of dogs fixed to the support assembly, adapted to push the table towards the main skids by means of pressurized fluid, thus generating a contrasting action, wherein each dog comprises a hydrostatic secondary skid, each secondary skid being configured to create a secondary pressure chamber with the upper face (20";220") of the secondary biasing portion (20;220), in which a meatus which pushes the table towards the main skids is formed; - electronic management means operatively connected to the main skids, the dogs and the detection means, configured to control the dogs so as to generate a contrasting action such that the lifting action is equal to a predetermined constant nominal load (P*), which is greater than the weight of the semi-finished product and either smaller than or equal to a maximum load (Pmax) which can be borne by the main skids.