7025A DC Axial Flow Fan 70×70×25mm High Static Pressure DC Cooling Fan for Radar, Aerospace & Harsh Environments

7025A DC Axial Flow Fan

70×70×25mm High Static Pressure DC Cooling Fan for Radar, Aerospace & Harsh Environments

The 7025A DC Axial Flow Fan (70 × 70 × 25 mm) is a high-performance cooling solution designed for high heat-density, high resistance airflow paths, and extreme environmental conditions.

With ultra-high airflow up to 108.6 m³/h and static pressure up to 150 Pa, the 7025A is particularly suitable for radar systems, avionics electronics, defense platforms, shipborne equipment, and industrial power electronics, where strong airflow penetration and long-term reliability are critical.

Core Engineering Advantages

• Ultra-High Airflow Output – up to 108.6 m³/h, ideal for high heat dissipation demands

• Exceptional Static Pressure – up to 150 Pa, ensuring strong airflow penetration through dense heat sinks and compact enclosures

• Dual Ball Bearing System – 50,000 hours lifespan @40°C

• Wide Voltage Range – 5V / 12V / 24V / 28V / 48V

• Wide Operating Temperature – –40°C to +75°C

• Multiple Signal Options – PWM speed control, tachometer output, fault alarm

Mechanical Structure & Design

• Frame Material: High-strength engineering plastic

• Impeller: Aerodynamic engineering plastic blades

• Bearing: Dual precision ball bearings

• Weight: 88 g

The 25mm thickness significantly enhances pressure capability and airflow stability, making it ideal for high-resistance thermal paths.

Performance Overview

This wide performance window allows flexible thermal design optimization across different system architectures.

Military-Grade Environmental Reliability

The 7025A fan supports environmental adaptability grades compliant with GJB military standards, enabling stable operation under:

• High & Low Temperature Cycling

• Salt Spray Corrosion (Marine & Naval Grade)

• High Humidity & Damp Heat

• Sand & Dust Exposure

• Mechanical Shock & Vibration

• EMC (Electromagnetic Compatibility)

• Power Supply Fluctuation

This ensures continuous and safe operation in harsh field environments, including:

✔ Radar stations
✔ Airborne electronics
✔ Shipborne navigation systems
✔ Defense communication platforms
✔ Military power electronics

Typical Application Scenarios

• Radar System Cooling Modules

• Aerospace & Avionics Electronics

• Naval & Marine Electronics

• Military Communication Systems

• Industrial Power Converters

• High-Density Control Cabinets

Why 7025A for High-End Systems?

Modern radar, aerospace, and defense electronics face three critical cooling challenges:

1. High Heat Density

2. Limited Installation Space

3. Extreme Operating Environments

The 7025A solves all three by providing:

• High airflow density in compact structure

• Strong static pressure for deep airflow penetration

• Military-grade environmental reliability

OEM & Custom Engineering Support

Senharfans provides custom cooling solutions, including:

• Voltage & airflow tuning

• Speed curve optimization

• PWM & signal customization

• Marine anti-corrosion coating

• Special connectors and harness design