The motor with a reducer transmits movement to the star rollers via a chain gear system. Dosage is controlled by adjusting the desired speed with the help of an inverter. The star rollers are electrically reversed to clean accumulated residues. Large and wide interior covers provide easy access to the lower auger and star rollers, facilitating easy cleaning and maintenance. The use of cast material between the hanging bearings that support the upper and lower augers and the auger shaft prevents wear and ensures long-lasting operation.