Classification Systems

The ROTO-SIZER is a forced-vortex air classifier designed to provide precise classification of fine powders. A specially engineered classification chamber and classifying rotor produce “cut” sizes down to 3 micron and produce yields of up to 92%. The classifier can operate as a separate system or it can be installed in-line with a mechanical or jet-milling operation.



  • Top size cuts as fine as 3 microns
  • Removal of fines or coarse particles
  • Variable-speed classifier rotor
  • Abrasion-resistant rotor designs
  • Product yields in excess of 92%
  • PLC or PC-based controls