Airflow at stated pressure
Ask for the fan curve: airflow at the static pressure of your ducts. Airflow at zero resistance is a showroom figure.
No DramaBuyer guide · Woodworking
Dust collectors are listed by motor power, but what clears a machine is airflow at its port against the resistance of your ducts, and a listing that states only kilowatts cannot tell you that.

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Ask for the fan curve: airflow at the static pressure of your ducts. Airflow at zero resistance is a showroom figure.
Bags suit coarse chips, cartridges fine sanding dust, and a cyclone ahead of either takes the bulk load off the filter.
Manual shaking, or pulse jet on a timer or pressure switch, which needs compressed air.
Fine wood dust can form an explosive atmosphere. Ask what venting, isolation or ATEX 2014/34/EU marking the unit has, and whether it is meant for indoors or out.
Returning filtered air saves heating but asks a lot of the filter. Ask the filtration class.
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Send these with the enquiry. Without them, any number a factory gives you is a guess dressed as a quotation.
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| Require this | A pass looks like |
|---|---|
| Measure airflow at the farthest port with all planned machines open. | Airflow at or above what the machine maker asks for at that port. |
| Run the filter cleaning cycle and read the pressure drop before and after. | Pressure drop returns to near the clean value stated in the offer. |
| Check the marking and venting on the filter housing. | Matches the explosion protection written in the offer. |
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A spray booth with its own extraction. A wood dust filter is the wrong place for lacquer overspray.
A mobile single-bag extractor. Central ducting is out of scale.
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We name the kind of source, how many and when, and never the factory. Listed prices are asking prices, not landed cost. Where we do not hold a fact we say so: that is a GAP, not an estimate.
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Every machine we source in this area is on the Woodworking page. How a project runs, stage by stage, is on how it works, and what it costs is on pricing.
Straight answers
Airflow at your duct run's static pressure, read from a fan curve.
Checkable fan curves, filter area, cleaning method and real explosion protection papers.
A Declaration of Conformity, fan data, and ATEX papers for dust zone parts.
Yours as employer. Exposure and explosion risk assessment are workplace duties.
Contact
Send a machine, a quotation you want checked, or a question. We reply with what we would look at first.
Sent
A person reads every message. You will hear back within one working day.
Not sent
Please email info@nodramachina.com directly and we will pick it up from there.