17251D DC Axial Flow Fan – High-Airflow Cooling for Demanding Industrial & Defense Systems
As electronic systems continue to grow in power density, reliable high-airflow cooling becomes a critical design requirement. The 17251D DC Axial Flow Fan is engineered to deliver strong airflow, high static pressure, and long-term operational stability for demanding industrial, defense, and vehicle-mounted applications.
With a large frame size of 172.5 × 150.5 × 51.0 mm, the 17251D series is designed for systems that require effective heat dissipation under high load and harsh environmental conditions.
Robust Mechanical Design
The 17251D fan features a die-cast aluminum alloy frame, providing excellent structural rigidity, vibration resistance, and heat dissipation. The engineering plastic impeller is optimized for high-speed operation, balancing airflow efficiency and durability.
A dual ball bearing structure ensures long service life and stable performance during continuous operation.
High Airflow & Pressure Performance
The 17251D series supports multiple speed configurations, reaching up to 9,500 RPM, with airflow up to 1203.8 m³/h and static pressure as high as 1562.6 Pa.
This makes it especially suitable for applications with high airflow resistance, such as sealed enclosures, power electronics, radar systems, and communication cabinets.
Flexible Voltage & Control Options
Standard configurations support 24V and 28V DC, with additional voltage options available from 5V to 48V.
Optional signal functions include:
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PWM duty-cycle speed control
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Tachometer (RPM) feedback
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High-level fault alarm
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Combined control and monitoring functions
These options allow seamless integration into intelligent thermal management systems.
Designed for Harsh Environments
The 17251D series is developed in accordance with GJB military environmental standards, covering:
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High and low temperature operation
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Vibration and shock resistance
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Sand, dust, humidity, and salt spray
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Electromagnetic compatibility (EMC)
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Abnormal overvoltage tolerance (80V / 50ms)
This makes the fan suitable for ground vehicles, marine systems, and airborne equipment, depending on the selected environmental rating.
Typical Applications
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Defense and military electronic systems
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Industrial power supplies and converters
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Vehicle-mounted and mobile equipment
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Communication and radar cabinets
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High-power energy and control systems
17251D DC Axial Flow Fan delivers a balanced combination of airflow, pressure, durability, and environmental adaptability—making it a dependable choice for mission-critical cooling solutions.
