Products Sorting

Indented Cylinder ZR

PETKUS Indented Cylinders ZR are used in mills for the sorting of rice by length. Designs for other crops are available upon request. The ZR is available in two different sizes and performance categories.
In the short grain selection broken grains as well as short foreign particles are separated from the product. The grain settles down in the cell pockets, and the rotation of the cylinder distributes it into a trough. A paddle auger conveys the material out of the machine. The long grain separation works correspondingly - but here only long and foreign particles are removed by guiding the shorter seed out of the trough. The indented cylinder systems are comprised of painted and bolted steel sheets and are completely encased. The horizontal rotating cell cylinders are made of a special galvanized sheet steel and equipped with cell pockets. These specially designed asymmetric cell pockets made of high-quality material provide for the highest sorting quality.


  • Gentle processing of the product
  • High standard of separating quality by asymmetric pocket cells
  • Segmented cell cylinder makes for a simple and quick changing of the cylinder casings
  • Easy and adjustable trough positioning
  • Vibration free operation and low noise development
  • Bolted housing made of painted sheet steel
  • Individual drive unit for each indented cylinder gear motor
  • Aspiration connection
    ZR 734 / 735 ZR 934 / 935
Length (mm) 4 149 4 227
Width (mm) 950 1 150
Height (mm) 4 050 / 4 940 5 821
Diameter (mm) 700 900
Cylinder Length (mm) 3 000 3 000
Weight kg 2 230 / 2 900 2 280 / 3 300
Output (t/h)    
Rice   14 / 20 18 / 25

Flow path diagram: