The invention refers to a mechanism for adjusting the distance between the cylinder rollers of cascade type grinders, used in the milling industry. According to the invention, the mechanism has eccentric circular housings [1, 2, 18 and 19] for the rollers [A and C] with adjustable positions. The circular housings [1, 2, 18 and 19] are each joined to a fork [E and F] made up of of two arms [10 and 11] whose ends [h and g] are joined by some screws [14] through a long channel [i] shaped as a concentric circle, to the axis of rotation of the eccentric housing [2]. The channel [i] allows adjustment of the gap at the ends [h and g] and, thus, allows the parallelism of the rollers to be adjusted. The adjustment of the position of the forks [E and F], within the limits of an angle alpha, for continuous adjustment, is achieved by a screw [5] with a rosette shaped head and a flange nut [6], whose plane section [c] slides along a linear channel [d] made in a support [7], fixed to the body of the roller. The screw [5] w
