120mm EC Centrifugal Cooling Fan for Controlled Airflow Systems
SZR's 120mm EC centrifugal fan series is designed for equipment requiring stable airflow concentration, moderate static pressure and intelligent electronic speed management. The centrifugal air intake structure enables efficient directional ventilation inside enclosed systems while maintaining reduced energy consumption and smooth operating stability. The series is commonly applied in communication cabinets, inverter cooling modules and precision electrical equipment.

Structural Configuration
The fan housing is manufactured from corrosion-resistant galvanized steel combined with reinforced structural supports for improved operational durability.
The centrifugal impeller adopts forward-curved blade geometry to increase airflow stability and improve internal ventilation consistency.
Integrated EC motor technology reduces electrical loss while supporting efficient speed modulation and quieter operation.
Internal airflow channels are engineered to minimize turbulence and improve heat dissipation efficiency in restricted installation spaces.
Technical Specifications
|
Parameter |
EC CF120-39 |
EC CF120-50 |
|
Dimension |
120×120×39 mm |
120×120×50 mm |
|
Rated Voltage |
24V / 48V EC |
48V EC |
|
Power Consumption |
10-22 W |
18-36 W |
|
Speed Range |
1800-4200 RPM |
2200-5000 RPM |
|
Airflow Capacity |
72-145 CFM |
110-185 CFM |
|
Static Pressure |
180-420 Pa |
280-650 Pa |
|
Noise Level |
32-48 dB(A) |
38-55 dB(A) |
|
Bearing Type |
Ball Bearing |
Dual Ball Bearing |
|
Protection Grade |
IP54 |
IP65 |
|
Operating Temperature |
-20°C to +70°C |
-20°C to +75°C |
|
Control Interface |
PWM / FG Optional |
PWM / FG / RD Optional |
|
Certifications |
CE, RoHS, ISO9001, UL |
CE, RoHS, ISO9001, UL |
Product Characteristics
• Stable directional airflow output
• Enhanced pressure performance for enclosed systems
• Reduced operating vibration and electrical loss
• EC intelligent speed regulation support
• Reliable long-term cooling operation
Typical Applications
• Communication power cabinets
• Embedded inverter systems
• Industrial electrical enclosures
• Battery cooling assemblies
• Smart control equipment
• Precision electronic modules
• Thermal management units
Frequently Asked Questions
Q: Can the fan operate continuously in industrial equipment?
A: Yes. Ball bearing structures are suitable for continuous-duty applications.
Q: Is speed adjustment supported?
A: PWM intelligent control and FG signal monitoring are available.
Q: Can the fan be used in dusty environments?
A: IP65 versions are available for improved environmental protection.
Q: Does SZR support custom wiring solutions?
A: Customized connectors, cable lengths and terminal types can be provided.

OEM Cooling Support
SZR offers customized centrifugal cooling fan solutions including airflow optimization, signal integration and project-based EC motor development for industrial thermal management systems.
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