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NESTRO Centralised Dust Collection

The NESTRO 9/4 is a negative pressure filter. The fans are mounted on top of the filter with the suction opening to the filter bags on the clean gas side. This makes the filter working in negative pressure with the big advantage that material like chips, dust and shavings never cross the rotor of the fan.
This ensures a high reliability without damages, maintenance work and the risk of spark production due to metal parts in the rotor.
Another advantage of negative pressure is the flexibility to add new suction lines without adding new fans. The only limitation is the maximum suction volume supplied by the filter unit.
While the fans are positioned on the clean gas side they can be made with closed rotor blades. This rises the efficiency of the fans from below 60% with open blades up to 90% with closed blades. So with the same electrical power consumption the fan supplies a much higher suction volume.
A pressure probe is measuring the negative pressure. If a machine damper opens and the negative pressure in the filters goes down, under a defined level the others start one after another like a cascade.
Rest times for cleaning the filter bags are necessary only every 4-5 hours for about 5 minutes (breakfast break, lunch etc.)

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Founded in 1977, NESTRO® Lufttechnik GmbH today is one of the largest established European manufacturers of extraction and filter technology products and systems, the downstream heating technology and surface engineering (extraction of grinding dust and paint mist) as well as sorting and disposal technology. More than 150 employees are engaged in development and production according to individual customer specifications for the woodworking and wood industry, the paper and corrugated industry, the plastics and metal processing as well as for the waste and recycling companies.

We think in systems and act for our customers. With us, you get everything from one source and optimally geared to each other. Our love of detail is not a luxury – it is the foundation of NESTRO®’s quality, because the smallest parts gain undesired importance when they break down. We know this area so well that we can coordinate all components with each other so they are streamlined. Identifying with our product and our long lasting experience in the extraction and filtering systems have resulted in an outstandingly high endurance for daily use. Our products are characterised by reliability, safety, efficient use of energy, reduced cost savings, integrative capacity, modularity and options for system integration and conservation of resources. The integrative capacity of our systems for existing system architectures as well as third-party systems highlights our goal of total customer satisfaction. NESTRO® systems cannot only be freely dimensioned and grow without a problem, they can also be used for very specific applications. One thing is certain – our systems will be compatible with your future.


NESTRO® is certified under ISO 9001: Quality from receiving area to the outgoing product. All new developments as well as any customer-specific test assemblies are tested realistically and rigorously in our own in-house testing booth. This approach creates independence. CAD/CAM assembly enables the required dimensional accuracy of all the components and systems made by us. And you can assure faultless functioning and optimal energy consumption for our products and systems over many years by using our maintenance contracts.