Belt Driven Axial Fans

Type UAS-FAISI-1270 UAS-FG2S3-760 UAS-FA4S4-560
Air Flow 42.000 m³/h 16.000 m³/h 9.000 m³/h
A (mm) 1380 950 650
B (mm) 1380 950 650
C (mm) 430 430 300
D (mm) 764 420 290
E (mm) 308 265 180
F (mm) 130 130 45
Stock Code Type Impeller Diameter Weight Motor Power Air Flow
0 Pa 10 Pa 20 Pa 30 Pa 40 Pa
501101 UAS FAISI 1270 1270 mm 78 Kg 1.0 hp 42000 39760 37670 35350 32830
501102 UAS FG2S3 760 760 mm 47 Kg 0.5 hp 16000 15000 13500 11500 10000
501103 UAS FA4S4 560 560 mm 24 Kg 0.34 hp - - - - -



As depending on different requirements it is produced 560 (22’’), 760 (30’’), and 1270 (50’’) types.Beside the fans, only the shutters and blades are also produced due to request.Fan shutters can easily be assembled and disassembled. Therefore it is convenient to clean inside of the fan. This type of ventilation fan bodies are produced from galvanized steel sheet. The blades are produced by stainless steel All blade types have special curvature for obtaining high efficiency and strength. Stainless steel blades have 304 quality and 1 mm thickness.


The shutturs are balanced by extra weights assembled to the shutters. Centrifugal force is created by the revolution of blades and shutters open by this centrifugal force and close by the help of extra weight.


It works by a motor-belt-pulley system and operates silently. The pulley is made from cast aluminum and bearing used on the blade side has an extraordinary design to extend the operating life of the fan. The circle frame is made of galvanized steel sheet. The shutters stay open during the operation of the fan and close when the fan ceases. The protection grill (wire mesh) is at the back of the fans and made from special wire. The fan is mounted to the wall by fixing the screws on the external frame of the fan


The belt of axial fan which works by the “motor-belt-pulley” system can become loose in course of time. To only way to prevent such a loose is to equip a tightening instrument. This way the capacity of the fan will not reduce and the belt will not wear out.To arrange necessary tightness in axial fans with the help of present technologies requires axtra time and labour. But with the help of “belt tightening system” which is developed by ÜNVEREN takes only 10-15 seconds to arrange the tightness of the belt of the ventilator with using butterfly nut and bolt which are located near the instrument.The working principle of belt tightening system is: tightening instrument moves the nut in the axial direction. This way the belt gets the necessary tightness.