Linear guide system comprising a guide element and one or more rotating bodies, movable according to a linear motion along said guide element and constrained to a structure to be supported and moved along said guide element, wherein each rotating body comprises: - at least one roller provided with an outer ring the surface of which rotates resting on a contact surface of said guide element; and - at least one substantially cylindrical stem, a respective roller being connected in a rotating manner to a first end of each stem, whereas the second end of said stem is constrained to the structure to be moved, the linear guide system comprising at least one safety supporting device constrained both to the structure to be supported and moved, and to one or more of the rotating bodies, said safety supporting device at least partially enclosing said one or more rotating bodies, said safety supporting device being characterised in that it comprises one or more surfaces that face said contact surface, each surface of said safety supporting device being configured in such a way that only a limited portion of the outer ring surface of each roller exits from said surface of said safety supporting device so that, under normal load conditions of the linear guide system, the safety supporting device allows for the normal linear motion of the rollers along said contact surface, whereas in the case in which a load higher than a predetermined threshold is applied on the linear guide system such that at least one of the components of the rotating bodies would be subjected to breakage, the safety supporting device rests on said contact surface, discharging said load on said contact surface, wherein the safety supporting device is dimensioned in such a way that, under the normal loading conditions of the linear guide system, the surface of the safety supporting device is kept at a predetermined distance from the contact surface of the guide element, said predetermined distance being calculated in such a way as to be comprised between: - the bending limit value to which each roller and the related stem may be subjected and which would lead to the breakage or yield point of the material of said stem and of said roller when said contact surface and surface of the safety supporting device come into contact, and - the maximum bending value to which each roller and the related stem may be subjected when bearing the normal workloads of the linear guide system, said predetermined distance being such that the normal sliding of each roller on said guide element by contact of the surface of the outer ring of said roller with said contact surface is always possible. - at least one roller provided with an outer ring the surface of which rotates resting on a contact surface of said guide element; and - at least one substantially cylindrical stem, a respective roller being connected in a rotating manner to a first end of each stem, whereas the second end of said stem is constrained to the structure to be moved, - the bending limit value to which each roller and the related stem may be subjected and which would lead to the breakage or yield point of the material of said stem and of said roller when said contact surface and surface of the safety supporting device come into contact, and - the maximum bending value to which each roller and the related stem may be subjected when bearing the normal workloads of the linear guide system,