ESPi industrial electrostatic precipitator unit

Industrial Electrostatic Precipitators (ESPi)

High-efficiency electrostatic air filtration for industrial machine tools, CNC operations, and manufacturing environments, up to 99% efficiency at source.

Up to 99% efficiencyDirectly machine-mountedHEPA filter availableLow maintenance

Used inDefense|Manufacturing & Engineering|Medical & Healthcare

Industrial-grade oil mist and fume extraction at source

Industrial Electrostatic Precipitators (ESPi) are high-efficiency air filtration systems designed to remove oil mist, smoke, and metalworking fumes generated by industrial machine tools and manufacturing processes. Using electrostatic charging and collection plates, they deliver up to 99% filtration efficiency down to 0.01 microns, removing harmful airborne contaminants at source, protecting worker health, sensitive machinery, and indoor air quality. Available in compact directly-mounted units for individual machines or large centralised in-duct configurations for full factory floors, the ESPi range scales from small CNC machine shops up to multi-machine production facilities.

The benefits of industrial electrostatic technology

•Removes harmful oil mist, smoke, and metalworking fumes at source
•Up to 99% filtration efficiency down to 0.01 microns
•Compact and directly machine-mounted, minimal footprint
•HEPA after-filter available for workshop recirculation applications

Technical specifications

All dimensions in imperial. Metric shown in brackets.

ESPi 600 / 1000, Directly mounted, compact units

Best for individual CNC machines, small workshops, and sliding head machines.

Model	Max Air Volume (cfm)	Max Air Volume (m³/h)	Dimensions (in)	Dimensions (mm)	Weight	Power	HEPA
ESPi 600	353 cfm	600 m³/h	W24.6 × H16.5 × D15.3	W625 × H420 × D389	66 lb (30kg)	230W	Available
ESPi 1000	589 cfm	1,000 m³/h	W24.6 × H23.6 × D15.3	W625 × H600 × D389	90 lb (41kg)	280W	Available

ESPi 1700, Multi-cell, higher volume

Best for higher-volume CNC operations, fine-finishing, and high-pressure machining.

Model	Max Air Volume (cfm)	Max Air Volume (m³/h)	Dimensions (in)	Dimensions (mm)	Weight	Power	HEPA
ESPi 1700 (3-Cell)	1,000 cfm	1,700 m³/h	W24.6 × H30.3 × D13.8	W625 × H769 × D350	125 lb (56.5kg)	530W	Available
ESPi 1700 (4-Cell)	1,000 cfm	1,700 m³/h	W24.6 × H35.0 × D13.8	W625 × H888 × D350	149 lb (67.5kg)	550W	Available

ESPi 2000 / 4000, High-capacity industrial units

Best for high-volume industrial applications requiring powerful extraction with low vibration and variable airflow. Positive ionisation voltage ideal for heavy-duty manufacturing.

Model	Max Air Volume (cfm)	Max Air Volume (m³/h)	Dimensions (in)	Dimensions (mm)	Weight	Power	HEPA
ESPi 2000	1,177 cfm	2,000 m³/h	W24.0 × H26.4 × D42.3	W610 × H671 × D1,074	146 lb (66kg)	540W	Not Available
ESPi 4000	2,354 cfm	4,000 m³/h	W41.2 × H26.4 × D42.3	W1,046 × H671 × D1,074	291 lb (132kg)	1,080W	Not Available

ESPi Centralised, In-duct, modular, large-scale

Best for multiple machines, large factory floors, defence contractors, and centralised extraction systems. Configurable from 1,500 cfm up to 35,000+ cfm.

Model	Max Air Volume (cfm)	Max Air Volume (m³/h)	Dimensions (in)	Weight	Power
ESPi 1500	1,500 cfm	2,520 m³/h	W17.7 × H24.8 × D25.2	122 lb (55kg)	20W
ESPi 3000	3,000 cfm	5,040 m³/h	W35.4 × H24.8 × D25.2	188 lb (85kg)	30W
ESPi 4500	4,500 cfm	7,560 m³/h	W53.1 × H24.8 × D25.2	260 lb (118kg)	40W
ESPi 6000	6,000 cfm	10,080 m³/h	W70.9 × H24.8 × D25.2	338 lb (153kg)	50W

All ESPi centralised units must be interlocked with the extract fan. Contact us for large-scale installation requirements above 6,000 cfm.

How it works

Machine generates oil mist, smoke & fumes

Extract ducting draws contaminants out

ESPi electrostatic unit captures particles at 99% efficiency

Clean air returned to workshop or exhausted

ESPi units work by drawing contaminated air through a high-voltage electrostatic field. Particles are charged, then captured on oppositely charged collection plates. Plates are removable and washable, keeping maintenance costs low.

ESPi systems support compliance with OSHA permissible exposure limits (PELs) for metalworking fluids and airborne particulates (29 CFR 1910.1000). EPA regulations may apply to coolant waste disposal depending on volume and chemistry. Our engineering team can advise on system selection to meet your applicable standards.