The malaxing phase represents the fundamental moment for the extraction of the oil both in terms of quality and quantity. During this phase of preparation of the pulp that has just been crushed by the crusher, the combination of the mechanical action of the rotating reel and the correct heat exchange allows the micro droplets of oil to group into ever larger drops of oil, giving rise to coalescence. The engineering of the malaxers and their perfect development guarantees excellent organoleptic properties of the extracted oil and excellent results in terms of quantity extracted and energy saved. Precisely for this reason the F.lli Ferri malaxers have been designed with an innovative design that guarantees perfect mechanical action and immediate thermal conditioning.