The concentration of these contaminants will continue to increase over time unless it is filtered out or removed by other means like coolant replacement and sump cleaning. This also has a detrimental affect on the quality of work, results in poor repeatability and also clogs up or reduces flow capacity of your cooling system. Nozzles and valves can block up. Nozzles can also get damaged due to abrasive affect of chips recirculating in coolant.
Considering the cost of tools, nozzles, valves, imperfect or rejected jobs and new coolant, it quickly becomes apparent that a correctly designed filtration system could provide a significant cost saving.
Installing a filtration system for your CNC coolant is both easy and economical in the long run. Our filter cartridge and bag filter housings provide a low maintenance solution. Filter, once installed, requires maintenance only when the filter cartridge or bag has clogged up with impurities and requires replacement.
CNC coolant filters are available in a range of coarse and fine grades. We recommend starting off with a 25 or 50 micron filter and then gradually moving down to suit your individual requirements. Filtration units can also be installed in series where a coarse prefilter or strainer would remove larger chips and particulates and protect the downstream fine filters. These are extremely versatile units and can also be added in parallel should your coolant filtration requirements increase in future.
We recommend installing a pressure gauge upstream and downstream of the coolant filter to measure differential pressure which is the only reliable method to correctly indicate filter changeout. All our filter housings can be supplied with a differential pressure gauge mounted on the unit with an easy to read coloured dial.