Contamination in CNC Coolant Systems & Filtration Solutions

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All CNC coolant systems left unfiltered will eventually develop bugs and accumulate chips and particulate from the work surfaces. These impurities can quickly contaminate the coolant causing costly disruptions and component failure. 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 visual indicator.

Inline CNC Coolant Filter Housing (Low/medium flow rate solution)

1FU Single Cartridge Filter Housing

Inline 1FU Series single cartridge filter housings provide an excellent solution for coolant filtration. Inline design and optional wall mounting bracket allows easy installation. These Stainless Steel units have a small foot print and are ideal for filtering small to medium CNC coolant volumes. 1FU filter cartridge housings come with a strong threaded closure and a pressure rating of 25 bar. All materials are compatible with both oil based or synthetic coolants.

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CNC Coolant Filter Cartridges (for 1FU filter housings)


acuraMultiflow filter cartridges feature a graded density structure, which enables the filters to catch particles throughout the depth of the element. These filters are ideal for clarification applications. Manufactured from 100% Polypropylene media, acuraMultiflow cartridges provide excellent chemical resistance and dirt holding capacity. These are available in a range of fine and coarse filtration grades.

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CNC Coolant Bag Filter Housing (High flow rate solution)

BFOS Bag Filter Housing

BFOS bag filter housings are ideal for high flow rate coolant systems. These rugged bag filtration units are manufactured from Stainless Steel and come with a strong hinged lid to withstand heavy duty use. BFOS Bag housings are supplied mounted on adjustable legs for easy installation and are available for bag sizes 1 & 2.

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CNC Coolant Filter Bags (for BFOS Bag Filter Housings)

acurabag acuraBag; Industrial Filter Bag; Filter Bag; Industrial Grade Filter Bag; Polypropylene Felt Filter Bag; Polyester Felt Filter Bag; Nylon Monofilament FIlter Bag; 7" x 16" Filter Bag; 7"X 32" Filter bag; 4" Diameter Filter Bag; Water Filter Bag;

acuraBag Polypropylene filter bags are manufactured from 100% PP and come with a moulded collar which provides excellent sealing inside the filter housing. These filter bags are capable of removing high dirt loads from CNC coolants and provide excellent service life. Manufactured from 100% Polypropylene and free from all additives, these filter bags provide an economical solution for high flow rate machine coolant filtration.

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