Extra and Extra High are two new gravity bed filters for coolants, which uses non-woven filtration tissue for eliminating magnetic and non-magnetic particles from neat oils and emulsions. Filtration degree is set thanks to the tissue choice and varies from 10 to 50 microns, securing a very high depuration level. Extra is available in two versions, normal or High with double bed, and 11 models for throughput from 50 to 300 l/min for neat oils and from 100 to 600 l/min for emulsion. 

Working principles

  • Contaminated coolant is piped into the trough and distributed on the filtration tissue, retaining pollutant particles and allowing the cleaned coolant to pass.
  • The tissue collects pollutant particles until it is full and the coolant cannot cross it anymore. The coolant rises its level touching a float, which actions the proximity sensor controlling the tissue movement and the replacing with the new one.
  • Dirty tissue is collected in a dedicated tank, while sludge are separated from a scraping blade, or it can be also rewound with a dedicated system (optional).
  • The clean liquid pass in the tank below and is sent back to the machine tools thanks to the dedicated electrical pump. 


dmd optional

Pre-filtration system with rotating magnetic discs for the separation of magnetic polluting particles from coolant.

skim optional

Superficial oil skimmer, it allows to lengthen coolant quality and eliminate odors generated by anaerobic bacteria.