A rotating system to withdraw, to transport and to feed blanks having two rotating elements, a first sun shaft, a first planetary shaft and a second planetary shaft disposed coaxial among them, two first arms, a third planet shaft, one or more second arms, one or more gripper means, first transmission means able to rotate the first and the second planetary shafts, second transmission means able to rotate-oscillate the third planet shaft in an independent manner, first actuator means, second actuator means, synchronizer means.