A legume harvester has a large rotating screen and a central beater and four satellite beaters. An upfeed stripper beater receives material from the upfeed side of the screen and a control beater beneath receives material from the upfeed stripper. The control beater flings the material to the central beater which in turn flings it to the screen for sieving. A downfeed stripper beater strips material from the screen and flings it back to the central beater. In one embodiment a sieving beater receives the material from the central beater and flings it to a lower portion of the screen for sieving. In another embodiment the central beater flings the material against the screen for sieving. Then, a second downfeed stripper beater strips the material from the screen and returns it to the central beater which flings it to a lower portion of the screen for sieving. A smaller diameter screen version employs only three satellite beaters.
