For many years now, the technically highly developed original Allgaier tumbler screening machines set the standard for fine and ultra-fine screening of all types of bulk goods. The successful TSM series has now been supplemented by the tsi series with improved design but additional machines sizes. With the development of the world's largest tumbler screening machine tsi 290 and some related, patented innovations such as segmented screen inserts, Allgaier has extended their technological lead even further.