Axial fans are suitable for large quantities of air at low pressures while producing very little noise. Compared with centrifugal fans the axial fans have the following advantages:

• Lower Price
• The impeller has adjustable blades which make it possible to adapt the fan to the requirements of the plant
• Reduced space requirements
• Shorter ducts, thus lowering the cost of the system

Belt driven axial fans are used in situations where it is important that the motor is kept out of the airstream due to the type or temperature of the gases/fumes involved. An additional advantage is the accessibility of the motor allowing easy maintenance.

Arrangement	Belt driven fans suitable for horizontal or vertical mounting.
Construction	Long cased, the casing covers the entire length of the impeller, shaft bearings and belt pulleys positioned inside and the motor mounted outside. An inspection door is provided for access.
ATEX	ATEX (II 2/3/G/D T1-T6) specification fans available for hazardous areas.
Motors	In most instances foot mounted T.E.F.C. Electric Motors are fitted with metric dimensions to BS3979. The motors are selected to cover the 'peak' power absorbed for fan blade pitch angle and speed. Most standard motors have Class F insulation and are suitable for operating temperatures of up to 50°C (122°F). Higher temperatures are available if required. The standard voltages are 220, 220/380, 380, 380/415 and 460. Motors can be wound for any voltage and frequency and also for dual voltage. The use of standard foot mounted motors of this type guarantees interchangeability in most countries of the world with machines of similar speed/power. EExd Zone 1, single phase, 2/3 speed and company specification motors can always be obtained.
Impellers: 315 – 1400mm diameter	Impellers have aerofoil variable pitch Aluminium blades fitted into a die-cast Aluminium hub. Five different blade angles are available and each blade is individually replaceable in the event of breakage. All sizes of impellers can be supplied with varying number of blades to suit the application.  This has the effect of reducing the static capability of the fan whist retaining a high efficiency.
Extra Features Available	Mounting Feet Flexible Connections Anti-Vibration Mountings	Mating Flanges Inlet Cones Guards	Back-Draught Shutters Special Paint Finishes External Terminal Box
Finish	Standard - Epoxy Resin. Optional - Galvanised.