AC axial fans are used when DC voltage is not available and are designed to create airflow with a high flow rate and medium pressure. Axial fans have an impeller surrounded by blades which works in a similar way to a propeller. The motor of the fan is integrated into the hub of the impeller to provide a compact fan unit. The impeller draws in air axially in a parallel direction to the revolving motor shaft and forces air out in the same direction. The axial fan is surrounded by a flanged housing with mounting holes allowing it to be mounted inside equipment.

Unlike traditional internal rotor motors where the rotating shaft is surrounded by electromagnetic coils ebm-papst fans feature an external rotor motor. In an external rotor motor the magnetic coils are encased inside a rotating shell. The advantage of this design is that external rotor motors are more compact in size, run more efficiently and are less prone to overheating than internal rotor motors

The fan impellers and the inner shape housing of the ebm-papst compact AC axial fans are expertly designed using state-of-the-art computer software. The blades are aerodynamically engineered and dynamically balanced in two planes for optimum performance. The air output and motor performance are precisely matched to the size of the fan which results in low noise, even at high back pressure.

• Fan motor integrated into the impeller hub to form a compact fan unit
• External rotor shaded pole motor
• Compact 119 x 119 mm design with small installation depth of 38 mm
• Expertly designed for maximum efficiency and performance
• Aerodynamic blades for low noise level and increased efficiency
• Choice of bearing types including PAPST Sintec sleeve bearings for low noise and low shock sensitivity
• Flanged housings with 4 x 3.7 mm mounting holes for installation into equipment
• Diecast alloy housing for a robust construction
• IP20 protection rating
• Protection from overload by impedance protection
• Long service life

The housings of these compact AC axial fans feature grounding lugs with M4 and UNC threads. 4 x 3.7mm diameter holes in the surrounding mounting flange enable the fan to be mounted on either face

These 4000 N series axial fans feature 2 flat 2.8 x 0.5 mm blade terminals. To connect the fan, you need to purchase a cable with a mating receptacle connector (see stock numbers 118-3077, 826-1329, 118-3156 and 118-3099)

• Finger Guards: Finger guards for these fans can be purchased separately (see stock numbers 101-8096, 512-581, 826-1357, 826-1354 and 826-1363).
• Filter Fan Guard: stock number 482-207 and 482-140
• Fan Filter Mounting Strap: stock number 826-1398
• Mounting Screw Clip: stock number 482-203

4000 series fan kits are also available which comprise of a fan, lead and wire guard or fan, lead and filter. Please see stock numbers 797-2258 and 797-2230 typically

The ACi 4400 series axial fans are energy saving versions of the 4000 N series. These fans utilise motors with GreenTech EC technology offering enhanced performance with a fraction of the energy usage of conventional motors. See stock numbers 740-6385 and 912-6123 typically

These compact AC axial fans are designed for hot or cold air exchange in a wide range of devices and systems. These applications include the following:

• Catering
• Domestic Appliances
• Enclosures
• Fans, motors and pumps
• Heating and ventilation
• Industrial drives
• Instruments
• Lighting
• Machines and Industrial
• Medical
• Power Supplies
• Printing
• Telecom
• UV systems