High-Airflow Centrifugal Cooling for Enclosed Equipment
The SZR 9733 DC blower fan is developed for medium-to-large electronic systems that require concentrated airflow and strong static pressure performance. Compared with standard axial cooling fans, the centrifugal blower structure forces air through a side outlet, enabling stable cooling performance even in systems with filters, ventilation ducts, or restricted airflow passages.
With its reinforced housing structure and large impeller design, the 9733 model delivers reliable thermal management for industrial-grade equipment operating continuously under demanding conditions.
Mechanical Structure
The 9733 blower adopts a heavy-duty thermoplastic frame manufactured from UL94V-0 flame-retardant material to improve operational safety and long-term durability.
Its enlarged centrifugal impeller is dynamically balanced to reduce vibration during high-speed rotation while maintaining stable airflow output. The internal airflow channel is engineered to minimize turbulence and improve pressure efficiency inside enclosed systems.
Dual bearing configurations are available:
- Sleeve bearing for low-noise general applications
- Ball bearing for extended service life and continuous-duty operation
The fan outlet structure supports direct air guidance toward targeted heat sources, making installation more flexible in compact industrial layouts.
Technical Specifications
| Parameter |
9733 DC Blower Fan |
| Dimensions | 97×94×33 mm |
| Rated Voltage | 12V / 24V DC |
| Operating Voltage Range | 6.0–13.5V / 18–26.5V |
| Speed Range | 3200–4500 RPM |
| Air Flow | 17.54–21.23 CFM |
| Static Pressure |
10.86–22.48 mmH₂O |
| Noise Level | 46.5–54 dB(A) |
| Bearing Type | Sleeve / Ball Bearing |
| Frame Material | UL94V-0 Thermoplastic |
| Weight |
168.3 g |
| Lead Wire | Red (+) / Black (-) |
| Compliance | CE / RoHS |
Product Advantages
• High static pressure for restricted airflow systems
• Stable operation during long-term industrial use
• Reinforced structure reduces mechanical vibration
• Suitable for filtered or ducted cooling environments
• Multiple voltage options for industrial integration
• Optional PWM, FG signal and customized connectors available
Typical Applications
• Industrial electrical cabinets
• Commercial air purification equipment
• HVAC control systems
• Power supply cooling modules
• Telecom communication equipment
• High-power LED control systems
• Industrial automation devices
Frequently Asked Questions
Q: Is the 9733 suitable for continuous operation?
A: Yes. Ball bearing versions are recommended for 24/7 industrial applications requiring extended lifespan.
Q: Can this blower handle airflow resistance from filters?
A: The centrifugal structure provides elevated static pressure, making it highly suitable for filtered systems and enclosed airflow channels.
Q: Are custom cable solutions available?
A: SZR supports customized wire lengths, terminals, connectors and PWM control options.
Q: Which voltage versions are supported?
A: Standard versions include 12V and 24V DC models.
SZR Engineering & Production Support
All SZR blower fans undergo functional inspection before shipment, including rotational speed testing, noise verification and electrical safety checks. OEM and ODM manufacturing support is available for customers requiring customized airflow performance, voltage adjustment or special installation structures.
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