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Friess GmbH Products
Friess GmbH
Separators for coolants and lubricants, pumps, filters, centrifuges

Magnetic Filter SMF

The self-cleaning Friess magnetic filter SMF removes iron, steel and stainless steel particles from process liquids of all kinds and is designed for a flow rate of up to 300 l/min. The self-cleaning magnetic filter type SMF removes ferritic dirt particles down to less than 1 µm. Particularly during grinding, honing and lapping, these particles can get between the tool and the workpiece and thus impair surface quality and removal performance. In addition, strong contamination of the cooling lubricant promotes the formation of bacteria. The self-cleaning Friess magnetic filter type SMF is equipped with three or five concentrically arranged magnetic filter rods. Due to the highly efficient neodymium magnets with extremely high field strength, the ferritic particles contained in the liquid are pulled onto the magnetic filter rods and held there. Due to the special flow guidance, the magnetic filter rods are flushed very slowly and evenly, so that the particles can simply adhere to the surface of the magnetic filter rods. Even if the magnetic filter rods are completely covered with dirt particles, the full flow is maintained. When the maximum capacity is reached, the magnetic filter is briefly rinsed. The inlet and outlet are closed for backwashing. The magnetic rods are then pulled out of the stainless steel cladding tubes with the aid of a pneumatic cylinder. The ferritic particles collected on the outside of the cladding tubes are flushed out of the filter through the bottom outlet valve with a little liquid. Any remaining dirt can then be flushed out by briefly opening the flushing valve. After a few seconds the filtration process can be continued. Since no consumables are used and only minimal auxiliary energy is required for the backwashing process, there are virtually no operating costs.
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