Each aluminium blade is cast using the highest grade of aluminium, with each individual blade and hub deburred by hand. Porosity is the enemy of axial fans, if axial blades and hubs aren’t cast using the right combination of materials, pressure and temperatures, porosity is inevitable.

Our blades and hubs are x-rayed to guarantee the lowest levels of porosity, making it the strongest fan, capable of withstanding higher levels of pressure, designed to outlast the building it is ventilating. Porosity weakens the internal strength of the blade, the blade root and hub. The outside of an impeller can look strong but on the inside of a blade or hub which has been poorly manufactured can look like honeycomb, which can drastically shorten the life of a fan.

Our rolling machines are designed with a four roller system to reduce common ‘flat spots’ on circular rolled casings, which means consistent accuracy on casing diameters, coupled with a casing ejection system to handle even the largest and heaviest casings with ease.

Elta Fans’ processes and procedures in welding are designed around a cardinal discipline to provide consistently straight welds on axial fan casings. Through automated welding procedures, equipment is designed to ensure casing joints achieve the required weld penetration, whilst eliminating potential flange splitting in subsequent manufacturing processes. All casings can be welded for specific requirements with a variety of casing thicknesses and diameter.

An integral aspect of the assembly process is to ensure correct balancing of impellers utilising high precision balancing machines. These machines are all balanced to JSO 14694, down to a balance level of G2.5 where appropriate, in either single or multi plane tolerances depending on design requirements. Testing is an important measure following assembly of products; our testing facilities and fans are subject to a series of stringent tests prior to despatch.

After assembly, the blades are cropped to the required finished impeller diameter. This ensures that the installed impeller blade tip clearance tolerances in the fan casing are maintained. It also means that the outer extremity of the blades for the selected blade angle is concentric to both the impeller axis and the casing periphery.

We pride ourselves on providing exemplary customer service; our main ambition is to take care of you and your products each and every day. A big part of this service is providing an efficient despatch process that ensures your products arrive on time, in perfect condition on a date that suits you.