An exchange device for a spinning line suitable to act in conjunction with a spinning frame side transport device carrying empty or dirty tubes and a roving frame side transport device, carrying bobbins, comprising - a peg carrier group comprising: i) an opening drive shaft and a rotary drive shaft rotatable around an axis of rotation; (ii) a plurality of carriages supported by said rotary drive shaft, each carriage being slidable along a respective radial direction (R*) and carrying at least one peg (84a,84b) for supporting the bobbins or tubes (12,14); iii) actuatable radial motion means for radially moving said carriages, comprising said opening drive shaft; iv) actuatable rotary motion means for rotating said rotary drive shaft; - actuatable vertical motion means for vertically moving said peg carrier group operatively connected to said rotary drive shaft; wherein the radial motion means further comprise a first electric motor actuatable to radially move said carriages, and the rotary motion means comprise a second electric motor actuatable to place said rotary drive shaft in rotation around said axis of rotation, wherein said exchange device comprises synchronization means suitable to synchronise the rotation of the opening drive shaft and the rotation of the rotary drive shaft, so that a predetermined rotation of the rotary drive shaft corresponds to an adequate counter-rotation of the opening drive shaft, so that the peg (84a, 84b) remains in the same position, and in that said synchronization means are electronic and provide for the synchronization between the actuation of the second electric motor and the actuation of the first electric motor. - a peg carrier group comprising: i) an opening drive shaft and a rotary drive shaft rotatable around an axis of rotation; (ii) a plurality of carriages supported by said rotary drive shaft, each carriage being slidable along a respective radial direction (R*) and carrying at least one peg (84a,84b) for supporting the bobbins or tubes (12,14); iii) actuatable radial motion means for radially moving said carriages, comprising said opening drive shaft; iv) actuatable rotary motion means for rotating said rotary drive shaft; i) an opening drive shaft and a rotary drive shaft rotatable around an axis of rotation; (ii) a plurality of carriages supported by said rotary drive shaft, each carriage being slidable along a respective radial direction (R*) and carrying at least one peg (84a,84b) for supporting the bobbins or tubes (12,14); iii) actuatable radial motion means for radially moving said carriages, comprising said opening drive shaft; iv) actuatable rotary motion means for rotating said rotary drive shaft; - actuatable vertical motion means for vertically moving said peg carrier group operatively connected to said rotary drive shaft; wherein said exchange device comprises synchronization means suitable to synchronise the rotation of the opening drive shaft and the rotation of the rotary drive shaft, so that a predetermined rotation of the rotary drive shaft corresponds to an adequate counter-rotation of the opening drive shaft, so that the peg (84a, 84b) remains in the same position, and in that said synchronization means are electronic and provide for the synchronization between the actuation of the second electric motor and the actuation of the first electric motor.