Forward Curved Centrifugal Fan – High-Volume Low-Resistance Airflow for Compact OEM Systems
Engineering & Application Overview
Commonly found in equipment, such as fan coil units, air handling modules, heat recovery ventilators, and cabinet cooling systems, they often have to deal with a specific problem. That is, those systems have low resistance, limited installation place and need higher air volumes in low static pressure. In this case, if you are using a backward-curved or airfoil centrifugal fan, that may count as extra cost and installation space. Because those fans pressure capability is not suitable for this equipment.
The Forward Curved Centrifugal Fan comes with the solution for this problem. In the engineering structure, it comes with a multi-vane impeller where multiple blades are curved in the direction of rotation. This design is capable of delivering high airflow volumes at the low to mid system resistances, even with smaller impellers. Those OEM equipment manufacturers want to set up in a small place and need high air volumes at an affordable cost; it could be a tremendous solution. Low system resistance generates lower noise, which is suitable for populated areas that need acoustic comfort.
Engineers need to know a few things before selecting this model. This Forward Curved Centrifugal Fan has overloading power curved, unlike a backward-curved fan. This means that if the system resistance decreases, then it will need more motor power demand, which can damage the motor. It can work without any problem where the duct resistance is static and OEM equipment has the fixed resistance. It provides steady airflow volumes at low static pressure in short installation places, which is perfect for installation in AHU modules, fan coil assemblies, heat recovery units and compact ventilation equipment.

Primary Industrial Uses












Core Technical Specifications
- Maximum Airflow: 6,000 ~ 55,000 m³/h
- Total Pressure: 716 ~ 1,650 Pa
- Efficiency: 55% ~ 80%
- Impeller Diameter: 615 ~ 815 mm
- Motor Power: 3.5 ~ 55 kW
- Max Temperature: Standard ambient duty; high-temperature variants available on request.
- Suitable Media: Clean air to light particulate-bearing airstreams.
- Power Curve: Overloading characteristic; correct motor sizing with service factor is mandatory
- Noise Class: Low in low-resistance conditions
- Vibration: ≤ 3.0 mm/s (ISO 10816-3 / ISO 14694)
- Power Transmission: Direct Drive, Belt Drive
- Body Material: Carbon Steel, SUS304, SUS316.
- Blade Material: As per order specification
- Customization: Available

Specification Table
|
Model |
U-Series |
Type |
Centrifugal fan. |
|
Impeller type |
Forward Curved Multi-Vane |
Electric Current Type |
AC |
|
Motor Power (KW) |
3.5 ~ 55 kW |
Power Supply |
As customer requires. |
|
Speed (RPM) |
1,450 ~ 1,470 |
Pressure (Pa) |
715 ~ 1,650 |
|
Efficiency (%) |
55% ~ 80% |
Temperature (F) |
Standard ambient |
|
Packaging |
Wooden Package |
Origin |
P.R. China |
|
Delivery |
All over the world |
Warranty |
18 months |
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