Balanced Air Pressure Cooling for Multi-Purpose Equipment
The SZR 50mm DC blower fan lineup combines compact dimensions with enhanced airflow capability, making it suitable for medium-density electronic cooling environments. Through centrifugal air delivery technology, these blower fans provide stronger directional airflow than standard axial cooling fans.
The 5015, 5020 and 5025 models are designed for applications where moderate static pressure and controlled noise levels are equally important. The deeper housing variants achieve improved thermal dissipation performance without requiring larger installation footprints.
Design Features
High-strength flame-retardant plastic materials are used for both the frame and impeller assembly, ensuring stable operation under continuous thermal load conditions.
The internal impeller geometry is optimized to improve airflow compression efficiency while reducing turbulence noise. Reinforced motor supports contribute to lower vibration during high-speed operation.
The 5015 version emphasizes compact integration, while the 5020 and 5025 versions provide progressively stronger airflow and pressure output for enclosed systems and filtered airflow channels.
Technical Data
| Parameter | 5015 | 5020 | 5025 |
| Dimension | 50×50×15 mm | 50×50×20 mm |
50×50×25 mm |
| Rated Voltage | 5V / 12V / 24V DC | 5V / 12V / 24V DC | 5V / 12V / 24V DC |
| Operating Voltage | 3.6–6.8V / 6.0–13.5V / 18–26.5V | Same | Same |
| Speed | 4300–6500 RPM | Higher Output | Higher Output |
| Air Flow | 2.87–3.67 CFM | Increased | Increased |
| Static Pressure | 10.2–23.9 mmH₂O | Higher | Higher |
| Noise Level | 35.1–44.8 dB(A) | Moderate | Moderate |
| Weight | 26.7 g | Approx. 32 g | Approx. 36 g |
| Bearing | Sleeve / Ball Bearing | Sleeve / Ball Bearing |
Sleeve / Ball Bearing |
| Compliance | CE / RoHS | CE / RoHS | CE / RoHS |
Cooling Performance Highlights
• Concentrated airflow for enclosed electronic systems
• Improved pressure performance for filtered ventilation structures
• Optimized blade profile for quieter operation
• Reliable brushless motor operation
• Multiple voltage options for industrial compatibility
• Suitable for both intermittent and continuous operation
Industry Applications
• Air purifiers
• Humidification equipment
• Industrial control systems
• Gaming accessories
• Compact ventilation modules
• Small automation equipment
Customer Inquiries
Q: Which version provides the highest airflow?
A: The 5025 model delivers the strongest airflow and pressure performance within the 50mm series.
Q: Is continuous operation supported?
A: Yes. Ball bearing versions are recommended for long-duration operation.
Q: Can speed levels be customized?
A: SZR can provide modified speed and voltage specifications based on project requirements.
Q: Are environmental certifications available?
A: All models comply with CE and RoHS requirements.
OEM Manufacturing Services
SZR supports customized cooling fan development including connector modification, cable customization, speed adjustment and private-label manufacturing for industrial customers.
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