The invention relates to improvements in the support of a solar tracker, of the type comprising a structure (1) on which a solar panel (4) is arranged by means of horizontal articulations (3), a linear actuator (5) being included between both, which linear actuator is attached to the solar panel (4) at a point (6) which is laterally separated with respect to the axial line of the horizontal articulations (3) and with respect to the structure at a point (8) which is laterally separated therefrom, shock-absorbers (9) being arranged between the solar panel (4) and the structure (1) in the areas of the horizontal articulations (3), whereas pins (10) limiting the pivoting of the solar panel (4) in both directions are arranged in the horizontal articulations (3).