The planetary countercurrent mixer CEM P Elba completes the Ammann programme of single shaft and twin shaft mixers. Depending on the type of the Ammann planetary countercurrent mixer the sizes range from 375 litres to 6000 litres filling capacity and allow compacted concrete outputs of 250 to 4000 litres.
This mixer type distinguishes itself by a rotor which turns around the vertical centre axis and, depending on the mixer size, is fitted with 1 or more rotating mixing stars. Due to the offset rotational axis of the mixing stars the individual mixing tools of the mixing stars form a sort of planetary path.