All-in-One Cartridge Collectors
Compact configurations for individual laser cutting machines.
Dust & fume extraction for laser cutting
Laser Cutting
Dust Collectors
Capture laser cutting fumes with a dust and fume extraction system matched to your machine. From compact all-in-one units to modular cartridge collectors, we configure filtration and airflow around the cutting bed, material and operating conditions.
Effective capture starts at the machine: bottom extraction, zoned suction and—where needed—top extraction must work with the cutting bed design.
01
Laser Cutting Applications
Examples of collectors supplied for laser cutting equipment. Final configuration depends on the machine’s extraction arrangement and the cutting process.
Click to enlargeEHI-2 Laser Cutting Dust Collector
Compact all-in-one cartridge collector for laser cutting fume extraction.
Click to enlargeEHI-4 with a VTOR Laser Machine
Cartridge dust collector paired with a VTOR laser cutting machine.
Click to enlargeEHI-4 with a Farley Laserlab Machine
Application example with a Farley Laserlab laser cutting machine.
Click to enlargeEHI-6 with a Han’s Laser Machine
Application example with a Han’s Laser cutting machine.
Explore More Models on Our Dedicated Product Pages
Modular Cartridge Collectors
For higher airflow or central extraction serving multiple laser cutting machines with compatible dusts.
Wet Dust Collectors
For special cutting processes requiring a wet collection solution.
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Match Extraction to the Cutting Machine
Start with the capture arrangement, then select the collector and fan to deliver the required airflow through the complete system.
Open-Bed Laser Cutting Machines
Bottom extraction draws fumes through the cutting bed. Coarse sparks and hot particles usually fall into the bed, while some fumes can rise above it. If bottom capture is insufficient, assess bed zoning and a suitable upper hood without obstructing machine operation.
Enclosed Laser Cutting Machines
Bottom extraction can be supplemented by extraction from the upper enclosure where suitable connections are available. The enclosure helps contain rising fumes; the upper and lower branches must receive adequate airflow.
The cutting bed matters. Zoned dampers that open near the moving cutting head concentrate suction where cutting takes place. An unzoned bed spreads airflow across a larger area. OEM port sizes, internal passages and damper controls all affect capture; a larger collector alone may not resolve poor bed extraction.
Two ways to combine top and bottom extraction
Click to enlargeSeparate Extraction: Two EHI-6N Collectors
Installation schematic. One EHI-6N serves the upper extraction and the other serves the cutting bed. Where process conditions allow, bottom extraction can operate alone at lower fume loads, with both collectors operating when upper capture is needed.
Click to enlargeCombined Extraction: One EHCDT4-16 Collector
Installation schematic. Upper and lower branches join a common main duct connected to one larger EHCDT4-16 collector. Branch balancing and total system resistance must be considered.
03
Laser Cutting Dust Collector Selection
Use the table as a starting point. Material, thickness, bed design, cutting duty and duct resistance determine the final selection.
| Model | Reference Airflow (m³/h) | Fan Motor (kW) | Cartridges | Spark Arrestor | Dust Container |
|---|---|---|---|---|---|
| EHI-1 | 1,000 | 2.2 | 1 | External | External |
| EHI-2 | 2,000 | 3 | 2 | External | External |
| EHI-3 | 3,000 | 4 | 3 | External | External |
| EHI-4 | 4,000 | 5.5 | 4 | Integrated | Integrated |
| EHI-4N | 4,000 | 5.5 | 4 | External | External |
| EHI-6 | 5,500 | 7.5 | 6 | Integrated | Integrated |
| EHI-6N | 5,500 | 7.5 | 6 | External | External |
Common EHI configurations supplied by 7US. Motor ratings refer to the extraction fan, not laser power. Reference airflow is for preliminary selection; actual operating airflow depends on fan performance and total system resistance. “External” indicates a separate arrangement; confirm the supplied accessories in the quotation.
Check the machine connections
Record the diameter and number of extraction ports, the bed dimensions, damper operation and duct layout. Ports are normally provided by the laser machine manufacturer; laser power alone does not define the required collector size.
Duct airflow: Q = 3,600 × A × v, where Q is m³/h, A is m² and v is m/s. For illustration, at 15 m/s: Ø200 mm ≈ 1,700; Ø250 mm ≈ 2,650; Ø300 mm ≈ 3,820 m³/h. These are calculated duct flows, not capture guarantees or fixed port limits.
When to consider a modular collector
Higher airflow, heavier dust loads or extended operation may call for a modular collector with more filter area and a larger dust discharge arrangement. Select the fan for the required flow at operating resistance, including loaded filters.
Downflow Modular Collectors →Vertical Modular Collectors →04
Configure for the Material and Fume
Match protective measures and filtration stages to the actual process, rather than choosing solely by laser wattage.
Oily sheets and sticky fumes
Oil on sheet surfaces can produce sticky fumes that increase filter loading. A compatible conditioning powder, such as a suitable lime-based powder, talc or other compatible conditioning powder, may help adsorb oil and form a protective filter layer. Powder choice and feeding arrangement must suit the process.
See Pipeline Powder Feeders →Sparks and hot particles
7US laser cutting collectors are configured with flame-retardant filter media. Where hot particles reach the collector, an integrated or upstream spark arrestor can reduce carryover. Flame-retardant media and spark arrestors do not make a collector fireproof or provide complete explosion protection.
See Spark Arrestors →Aluminium and combustible dust
Assess the combustibility of the collected dust and the required fire and explosion protection for the installation. Grounding, suitable media, isolation and explosion relief may be needed. 7US can configure selected protective components; this does not constitute whole-collector ATEX certification.
Wet collection and combined systems
For processes with persistent hot-particle problems, assess wet collection or a wet-plus-dry arrangement. Wet collection captures particles through contact with liquid; fine-particle performance depends on the scrubber design, not simply water solubility.
See Wet Dust Collectors →Wet-plus-dry treatment: A demister removes entrained droplets before downstream filtration. Depending on the process, a fine-filter stage (such as F9 under the former EN 779 classification), HEPA stage or pulse-cleaned cartridge collector may be added. Humidity and condensation must be controlled to protect dry filters. Recirculating water still requires sludge removal and appropriate wastewater or residue management.
Thick aluminium, wood and leather cutting require individual assessment. Wet treatment can reduce some ignition risks but does not eliminate them; aluminium dust in contact with water also requires assessment of hydrogen generation. Gases and vapours may need treatment beyond particulate filtration.
05
Questions Before Selection
Practical checks for a new installation or an extraction upgrade.
Can a larger collector solve smoke escaping from the bed?
It may help if inadequate delivered airflow is the cause. First check the bed passages, port size, zoning, duct resistance and available capture points. Increasing collector size cannot compensate for every restriction or poor capture arrangement.
Do top and bottom extraction always need two collectors?
No. Balanced branches can share one collector sized for their combined duty. Two collectors allow independent control and can be useful where upper and lower extraction requirements differ.
Can the filtered air be returned indoors?
This depends on the material, contaminants, filtration performance and applicable requirements. HEPA filtration may be considered for fine particles, but does not remove all gases or vapours. Confirm the discharge arrangement for the project.
What information is needed for a quotation?
Send the laser machine model and power, bed dimensions, materials and thicknesses, cutting duty, extraction port sizes and photos. Include the duct route, available electrical supply and any problems with smoke, oil or sparks.
Discuss your laser cutting application
Send us your machine and extraction details.
A photo of the cutting bed and extraction ports helps us assess a suitable collector and connection arrangement.
Request a Configuration- Machine model, laser power and bed size
- Material, thickness and operating hours
- Port diameters, zoning and top extraction
- Duct route and available electrical supply
- Smoke escape, oily fumes or spark problems