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Hot-gas fan for building materials production – 550°C and dust-resistant stainless steel impeller

04 June, 2026

Heat and dust? We can handle it!


In the production of building materials, high temperatures, dust-laden media, and continuous system loads often occur simultaneously. This hot-gas fan was designed specifically for such demanding operating conditions.

It conveys up to 30 m³/s of hot gas with a pressure increase of approximately 1,600 Pa. At the heart of the design is a dust-resistant stainless steel impeller with a diameter of 1,400 mm.

The fan is driven by a reliable 90 kW WEG W22 motor in the IE4 efficiency class, in a 6-pole configuration. This ensures the system is designed for stable continuous operation under demanding conditions.

To ensure the hot gas fan operates reliably even at high temperatures and with dust-laden media, it has been equipped with numerous practical features:

  • Designed for medium temperatures up to 550 °C
  • Split housing for transport and installation within the plant
  • Large cleaning opening for easy access during maintenance and cleaning
  • Automatic bearing lubrication
  • Speed monitoring for additional operational reliability
  • Separate cooling air blower for stable bearing cooling

Especially in high-temperature processes with high dust loads, reliability, ease of maintenance, and robust construction are crucial for trouble-free plant operation.

Together with the accessories for connection to the air ducts, a comprehensive concept was developed that is precisely tailored to the connection requirements in the customer’s plant.

A special feature is the radial impeller itself.

Technically, it stands for performance and durability; in terms of craftsmanship, for precision manufacturing. It’s a shame, really, that it’s usually not visible during later operation.

Another example of how not all fans are created equal.

ZENNER Fans – Durable. Low-maintenance. Quality since 1947.
Made in Germany.


When is this hot-air blower the right choice?

This hot gas fan is suitable when:

  • dust-laden hot gases need to be conveyed
  • media temperatures reach up to 550 °C
  • robust continuous operation is required in building materials production
  • maintenance accessibility and cleaning options are important
  • transport and installation are to be facilitated by a split housing
  • additional operational safety is required through speed monitoring and bearing cooling

This model is not suitable if:

  • only low temperatures or simple ventilation tasks are involved
  • no dust- or temperature-laden media are being conveyed
  • a compact standard solution without high-temperature design is sufficient
Technical Classification
  • Application: Building materials production / High-temperature process
  • Fan type: Hot gas fan / Centrifugal fan
  • Fluid: Dust-laden hot gas
  • Fluid temperature: up to 550 °C
  • Airflow: up to 30 m³/s
  • Pressure rise: approx. 1,600 Pa
  • Impeller: 1,400 mm, dust-resistant, stainless steel
  • Drive: 90 kW WEG W22, IE4, 6-pole
  • Features: split housing, cleaning access, automatic bearing lubrication, speed monitoring, cooling air blower
  • Advantage: robust high-temperature design for continuous operation in dusty environments
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