Axial Fans – IAS
  • Volume Capacity:2,600~116,800 m³/h (1,529~68,706 CFM)
  • Static Pressure:50~850 Pa (0.2~3.41 in.WG.)
  • Drive Type:Direct drive
  • Installation Methods:Vertical/ Horizontal/ Ceiling hung
  • Applications:Smoke exhaust / Two-speed fume exhaust


Aerodynamic Performance of High Efficiency

— Airfoil blades of the impeller with optimum aerodynamic performance are used.

— The impeller is designed to have a streamlined hub.

— CFD simulation technology is used for optimized design which is also validated through repeated trials.

— High-standard processes are used to reduce clearance between the impeller and the cylindrical fan body.

— The impeller has great efficiency that helps save operational costs.

Structural Reliability

— The casting process of high standard is adopted to ensure the manufacturing accuracy and stability.

— The impeller has the design CAE aided that goes through tests for optimization.

— The vortex-shaped hub has high-strength and makes operation more reliable.

— There is a creative way of hub connecting for safer operation.

High Balancing Level

— The impeller reaches G2.5 grade balancing level (whereas common products have only G6.3 level).

— It helps reduce vibration in operation and improves reliability.

— The sound is substantially down.


High Efficiency

— Airfoil blades that have optimum aerodynamic performance are used.

–The smooth vortex-shaped hub reduces turbulence.

–High-standard processes are used to reduce clearance between the impeller and the cylindrical fan body so that greater efficiency can be achieved.

–There are guide vanes fitted at the back of the impeller.

Great Reliability

— The advanced FEA-aided design is adopted for continuous optimization

— Core components use the casting process so that high strength can be ensured.

— By using the die-formed technology, high precision and great consistency are achieved.

— The higher balancing level helps create reliability in operation.

Direct Driven, Highly Efficient and Maintenance-free Design

— The transmission efficiency is much higher.

— There are no quick wear parts and low maintenance is required.

— Maintenance work is convenient and efficient.

— Long working life can be achieved by using the bearings that are sealed and require no lubrication.

— Less space is needed as the product size is smaller.


— General ventilation

— Explosion-proof ventilation

— Positive pressure air supply/ Smoke exhaust

— Two-speed ventilation

Easy and Different Installation Options

— Base-mount: horizontally or vertically.

— Ceiling-hung: horizontally or vertically.

— Roof mounted: Flag-CloudTM weather hood is used for outdoor installation.


INFINAIR IAS fans are CCCF certified.

Fan Type

The IAS fan shall be vane-axial type that has airfoil blades. It shall be of direct drive and the whole fan takes on a cylindrical shape.

Quality Standards

Tests shall be performed on IAS fans and certificates obtained under AMCA Standard 210 & 300. Each fan shall bear the AMCA Seal for Sound and Air Performance before leaving the factory. The manufacturer shall have the Production License for National Industrial Products and get the ISO 9001 certification.


The impeller shall undergo static and dynamic balancing tests and reach AMCA 204- G2.5 balancing level for greater stability and longer working life.

Fan Housing

It shall be constructed of cold rolled steel sheets and flanges formed through the integration process are used. The thickness of the housing materials shall ensure the housing supports the motor well without deformation.

Surface Treatment

The fan surface shall be treated so that no protuberances, welding spatters, burrs, sharp edges, scrap iron and greasy dirt can be found. The processes of oil removal, pickling, parkerizing and applying putty are done and then electrostatic epoxy coatings shall be applied. Also for the corrosion-free operation in the long term, the surface shall be a level one without sags, cracks, cockles or detachment.


The impeller shall be directly connected with the motor. The motor adopts B3 installation type. It shall have a degree of protection standard IP54, an insulation class F and Temperature Rise Class B. Its bearing shall be of ball type and require no lubrication.

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