Products are transferred in an automatic manufacturing machine by a unit (1) equipped with multiple transport heads (8), and a drive system (10) comprising at least two transmission assemblies (11a, 11b) by which the heads (8) are set in motion. The transport heads (8) are divided operationally into a first group (12) and a second group (13), in which motion is induced by a respective first transmission assembly (11a) and a respective second transmission assembly (11b).
