Aspirator based on an inertial and mechanical system capable of eliminating oil mist, fumes and vapours generated by mechanical processes using neat oils. It features an innovative system designed to achieve an effective and ultra high abatement of pollutants directly at the source, with the positioning of the electric fan downstream in relation to the filter battery. This feature allows quick and easy replacement, maintenance and periodic inspection directly from the filter compartment door. Decanting and filtration is performed through the stilling chamber, the prefilters, the high efficiency cartridge H12, the two absolute filters H13, so as to obtain a filtration rate of 99.99%. Supply voltage 400 V / 50 Hz three-phase.