70mm DC Axial Fan Series: Mid-Size Cooling for General Electronic Systems
Designed for moderate space and medium-power applications, SZR's 70mm DC axial fan series delivers stable, high-efficiency cooling in a 70×70mm footprint. Available in thicknesses from 10mm to 35mm, these fans balance moderate dimensions with upgraded airflow, making them ideal for standard devices with limited installation space. Built with UL94V-0 plastic components and supporting both sleeve and ball bearing configurations, the series operates on 12V, or 24V DC inputs to fit most industrial and commercial power systems.
Design & Engineering Notes
The 70mm lineup caters to diverse cooling needs through varying thickness profiles:
- Slim models (7010, 7015): 10–15mm thickness optimized for slim electronic devices, power adapters and compact control units, with lightweight design for easy mounting.
- Mid-range thicknesses (7020, 7025): Strike a perfect balance between airflow and noise, suitable for home appliances, small industrial equipment and conventional power supplies.
- Thicker variants (7030, 7035): Enhanced static pressure for enclosed cabinets and equipment with dense internal components.
All models feature color-coded wiring (red positive, black negative) for easy installation and comply with CE/RoHS standards.
Key Specs (Model 7015)
| Dimensions | 70×70×15mm |
| Rated Voltage | 12V / 24V DC |
| Operating Voltage Range |
6.0–13.5V (12V), 18–26.5V (24V) |
| Speed Range | 3000–5500 RPM |
| Air Flow | 10–18 CFM (0.28–0.51 m³/min) |
| Noise Level | 22–32 dB(A) |
| Bearing Type | Sleeve / Ball Bearing |
| Material |
Impeller & Frame (UL94V-0 Plastic) |
| Certifications | CE, RoHS |
Specifications for 7010, 7020, 7025, 7030, and 7035 are available upon request or via the SZR official catalogue.
Core Strengths
- Moderate Universal Footprint: Fits most standard electronic device mounting holes, compatible with mainstream mid-size cooling designs.
- Optimized Airflow Performance: Upgraded fan blade design delivers higher air volume while maintaining low energy consumption.
- Flexible Bearing Options: Sleeve bearings for cost-effective low-noise operation; ball bearings for long-term continuous running in industrial environments.
- Stable Structure & Durability: High-temperature resistant plastic ensures stable performance under long-hour working conditions.
- Wide Voltage Compatibility: 12V/24V DC support matches most commercial and industrial power supply standards.
Ideal Applications
• Power adapters and switching power supplies
• Small industrial control equipment
• Household electrical appliances
• Electronic instrument and testing equipment
• Medium-sized LED cooling systems
• Mini cabinet and enclosure ventilation
Quick Support Q&A
Q: How do I choose between different thicknesses?
A: Slimmer models (≤15mm) work best for low-static-pressure open systems; thicker variants (≥20mm) provide higher static pressure for enclosed/filtered setups.
Q: Are low-noise versions available?
A: Yes. Custom blade profiles and speed tuning reduce noise output for noise-sensitive environments like home electronics and office equipment.
Q: What's the typical lifespan?
A: Sleeve bearing models offer 20,000–30,000 hours of continuous use; ball bearing versions extend this to 40,000–50,000 hours.
Our Commitment
SZR maintains strict quality control for all 70mm DC fans, with 100% functional testing before shipment. Our engineering team assists with airflow matching, model selection, and custom cooling solutions tailored to your project.
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