Greenheck Fan Ventilation Hood Axial Fans User Manual

High Performance Axial Fans  
Performance information is for the model AX standard  
configuration. Optional configurations include; upblast  
design with butterfly dampers and curb cap, detachable air  
straightening vane section, and shortened case. These options  
can effect performance. For estimated pressure drops on these  
accessories, consult your local Greenheck representative.  
Greenheck certifies that the  
Model AX fan shown herein  
are licensed to bear the AMCA  
seal. The ratings shown are  
based on tests and procedures  
performed in accordance with  
AMCA publication 211 and  
comply with the requirements  
of the AMCA Certified Ratings  
Program.  
AX Upblast  
AX Vane Section  
AX Short Casing  
Available Hub Sizes (mm) / Number of Blades  
Hubs and Blades  
160  
190  
275  
400  
533  
The AX blade shape and hub are designed to move high  
volumes of air with less power to save on long-term energy  
costs.  
Size  
(4 or 6 ) (4 or 6) (6 or 9) (6 or 9) (8 or 12)  
31  
36  
X
X
The choice of five different hub diameters, along with variations  
in blade quantities, ensures that the most economical air  
performance can be achieved. In addition, during the design  
process, close attention was paid to the “hub to tip” ratios.  
This is a comparison of the hub diameter to the “tip to tip”  
dimension of the blades. Different choices of hub to tip ratios  
further optimize fan performance and provide a cost effective  
solution by not over sizing a hub to produce required volumes  
and pressures.  
The hubs are  
constructed from  
cast aluminum and  
use a taper lock  
41  
X
X
X
X
X
X
X
X
X
X
47  
54  
X
X
X
X
X
X
X
63  
72  
80  
X
X
X
X
X
X
X
90  
bushing to secure  
the hub to the  
motor shaft.  
103  
113  
123  
140  
160  
X
X
X
X
2
 

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