A unit for conveying agricultural products, such as grass, hay, forage, wheat, corn and the like, for agricultural machines (100) of the type of balers, round balers and the like, comprising at least one apparatus (2) for picking up previously cut agricultural products, and at least one device (3) for conveying the agricultural products picked up by the apparatus (2) toward an inlet to a chamber (102), which is comprised in the agricultural machine (100), for forming a bale; the device (3) comprises a main rotating shaft (4), which faces the apparatus (2) and is provided with teeth (5) for the transfer of the agricultural products to the chamber (102), and at least one auger (6). The auger (6) comprises an auxiliary rotating shaft (7), which faces the apparatus (2) and is contiguous and substantially coaxial to the main shaft (4), and a screw (8), which is wound around the auxiliary shaft (7), in order to push toward the teeth (5) the agricultural products; the device (3) comprises at least one series of stems (9), which are parallel to the auxiliary shaft (7) along a center distance that increases progressively with respect to the longitudinal axis (A) defined by the auxiliary shaft (7) and by the main shaft (4). Each stem (9) is interposed between the first turn of the screw (8), which lies closest to the teeth (5), and the respective inner end (7a) of the auxiliary shaft (7), for the facilitated movement of the agricultural products propelled by the auger (6) toward the teeth (5).