Abstract: A machine for extracting juice from citrus fruits, has at least two first cylinders each having a plurality of substantially semi-spherical cavities for accommodating fruits rotatable in opposite directions to transport the fruits, a cutter located downstream of the first cylinders so as to bisect the fruits into two halves which remain lodged in the cavities of the first cylinders, at least two second cylinders located downstream of the first cylinder and each provided with a plurality of substantially spherical protrusions and rotatable so that during rotation the protrusions extend into each fruit embedded in the cavities of the first cylinders with a gap which remains between the protrusions and the cavities and is substantially equivalent to a thickness of a peel of the fruits thereby preventing excessive crushing of the peel. The first cylinders and the second cylinders are rotatable synchronously so that the peel remains sticking to the protrusions. The protrusions are provided with grooves.