Rolling stand for metal products

A rolling stand for oblong metal products comprising a plurality of rolling rolls each installed on a respective rotation shaft, between at least one rotation shaft and the respective rolling roll there being provided a coupling member configured to couple said rolling roll and said rotation shaft to each other, said coupling member comprising a tubular body interposed between said rolling roll and said rotation shaft, wherein said tubular body is provided with at least one chamber in which at least one deformer element is inserted mobile and is able to be selectively driven to deform said chamber and said tubular body,

• wherein the at least one deformer element defines a first compartment and a second compartment in the at least one chamber, the first and second compartments being separate from each other and being configured to receive therethrough a work fluid configured to respectively activate or de-activate said coupling member,
• wherein said at least one chamber is connected to a fluid-dynamic circuit configured to feed the work fluid, and
• wherein said fluid-dynamic circuit is provided respectively with a first feed branch and a second feed branch made in the rotation shaft and connected respectively to the first compartment and to the second compartment of said at least one chamber.