Coalescing Fiber Bed Technology

Industrial processes that combine lubricants with high-speed machining tools generate oil mist and smoke. As machine tools spin faster to improve productivity, coolant delivery rates, and pressures increase. As this happens, the risk of problems from oil mist and smoke also grows.

The exact make-up of oil mist and smoke varies based on the process, but will likely consist of a complex mix of toxic contaminants - oil, water, additives, metal slivers, bacteria and more. Exposure to oil mist and smoke is harmful to human health and the wider environment. It’s vital to capture industrial pollution at the source, the moment it is generated, to mitigate health and safety risks.

Most oil mist and smoke collectors are only effective against larger particulate, around 10μm in diameter. But ScandMist is effective where it really counts — with particulate under 1μm in diameter (PM1)!

ScandMist collectors combine oil coalescing filters with a final HEPA filter stage that provides 99.95 % efficiency against particulate 0.3μm in diameter. With this level of filtration, the output air from ScandMist is clinically clean and likely to be of a much higher standard than the air found outside your facility. That means safe air quality for your workers, and health and safety resolution for you.

Oil Mist and Smoke applications




ScandMist Coalescing Fiber Bed Technology










How Does the Coalescing Technique Work?

Multiple layers of pleated media collect the oil or coolant, allowing it to drain to the base of the unit. The filter media does not absorb the oil, but rather coalesces the ever-increasing droplets until they are heavy enough to drain.

Contaminated air passes through the filter media where oil particles are attracted to the oleophobic fibers. The oil droplets continue to collide with the fiber and grow in mass. As the oil drop gets bigger, it becomes heavy enough to fall against the airflow to the base of the ScandMist unit. Here, it can be collected or drained straight back to the machine tool sump.

The scrubbed air is then passed through a second coalescer at stage two, where the process is repeated. This second coalescer has a higher filtration efficiency than the initial stage and captures the smaller oil particles that were not caught in stage one.

After this second filtration stage, the air is on average between 95 – 98 % free from oil mist.

ScandMist can help you stay compliant, both now and in the future.

ScandMist exceeds all prescribed limits for exposure to metalworking fluids. And to make compliance easy, we can recommend an optimized filter solution for even the most challenging environments.

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