7020A DC Axial Flow Fan
High-Performance 70×70×20mm DC Cooling Fan for Radar, Aerospace & Defense Electronics
The 7020A DC Axial Flow Fan (70 × 70 × 20 mm) is a high-performance cooling solution engineered for mission-critical electronic systems requiring high airflow, strong static pressure, and extreme environmental reliability.
Designed to operate under severe vibration, wide temperature ranges, humidity, salt spray, and electromagnetic interference, the 7020A model is widely applied in radar platforms, airborne electronics, marine systems, defense electronics, and industrial control equipment.
Key Features
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High Airflow Output – Up to 74.4 m³/h for efficient heat dissipation
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High Static Pressure – Up to 71.6 Pa, ideal for dense heat sink structures
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Dual Ball Bearings – Rated lifetime 50,000 hours @40°C
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Wide Voltage Range – 5V / 12V / 24V / 28V / 48V available
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Wide Operating Temperature – –40°C to +75°C
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Multiple Control Options – PWM speed control, tachometer feedback, fault alarm
Mechanical Structure
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Frame: Engineering plastic, high strength & lightweight
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Impeller: Precision aerodynamic blade design
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Bearing System: Dual ball bearings for long-life operation
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Weight: 62 g
Performance Overview
| Voltage | Speed | Airflow | Static Pressure | Noise |
|---|---|---|---|---|
| 12V / 24V / 28V | 3000–5000 RPM | 44.7–74.4 m³/h | 25.8–71.6 Pa | 34.1–45.1 dBA |
Military-Grade Environmental Reliability
The 7020A DC axial fan supports harsh environment adaptation levels compliant with GJB military standards, including:
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High / Low Temperature Resistance
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Salt Spray Corrosion Resistance
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Damp Heat & High Humidity Endurance
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Sand & Dust Protection
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Mechanical Shock & Vibration Resistance
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EMC (Electromagnetic Compatibility)
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Power Supply Stability
This ensures stable and safe operation in extreme mission environments, making it ideal for:
✔ Radar systems
✔ Avionics electronics
✔ Shipborne & marine electronics
✔ Military communication equipment
✔ Industrial automation & power control systems
Typical Applications
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Radar Cooling Systems
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Aerospace & Avionics Electronics
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Naval & Marine Electronics
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Defense & Military Equipment
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Industrial Power & Control Cabinets
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High-Reliability Embedded Systems
OEM & Customization Services
Senharfans offers OEM / ODM customization, including:
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Voltage and airflow optimization
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Speed curve tuning
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PWM & signal configuration
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Connector & cable customization
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Salt-spray and corrosion-resistant coating
Why Choose Senharfans?
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20+ years manufacturing experience
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Specialized in radar, aerospace & defense cooling solutions
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Strict quality control & military-grade validation
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Stable mass production and long-term supply capability
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