The BLOW axial fan 70x15mm 24V with ball-bearing design is a compact DC cooling fan intended for continuous or intermittent forced-air circulation in small enclosures and equipment. With a 70 mm diameter and a slim 15 mm profile, this fan fits tight spaces where standard fans are too large. It is designed for 24 V DC systems and is suitable for cooling electronic assemblies, compact PC configurations, industrial control cabinets, and ventilation ducts that require a low-profile airflow solution.
Advantages
The ball-bearing construction of this 70x15mm fan improves mechanical durability and supports longer operational life under continuous use compared with basic sleeve-bearing designs. Its slim form factor allows installation in constrained locations while still delivering directed airflow. Operating from a 24 V DC supply makes it compatible with many industrial and automotive power systems. The fan's small size and standardized mounting facilitate replacement or retrofit without major mechanical modifications.
Suitable for
- Cooling small electronic enclosures and control boards
- Supplementary airflow in compact PC or embedded systems
- Ventilation in compact industrial equipment and control cabinets
- Air circulation in custom ventilation channels and ducts where space is limited
When it may not be suitable
Due to its compact 70 mm diameter and 15 mm thickness, this fan provides moderate airflow compared with larger or higher-performance models; it may not be adequate for cooling high-power components or large enclosures that require substantial CFM. The fan is designed for 24 V DC operation, so it is unsuitable for systems that supply different voltages unless a compatible power conversion solution is used. Noise and vibration levels are typical for small ball-bearing fans and should be considered for noise-sensitive applications.
Key specifications
- Blade diameter: approximately 70 mm
- Thickness/profile: approximately 15 mm
- Rated supply voltage: 24 V DC
- Bearing type: ball bearing for improved durability
- Typical mounting: standardized screw holes for compact fans (check physical dimensions before installation)
- Application class: axial flow, for ventilation and component cooling in small spaces
How to use
Install the fan in the intended position ensuring correct airflow direction toward the area to be cooled. Secure mounting using the fan's screw holes or compatible bracketry to minimise vibration. Connect to a stable 24 V DC supply, observing correct polarity and using appropriate wiring and connectors. If the system requires speed control, use a compatible PWM controller or voltage regulator rated for 24 V and the fan's current draw. Periodically inspect and clean the fan blades and inlet/outlet paths to maintain airflow and reduce noise; when servicing, disconnect power before handling.
What to consider before purchase
- Confirm 24 V DC compatibility with your power source
- Verify the physical mounting dimensions and available clearance for a 70x15 mm fan
- Assess required airflow and static pressure to ensure the small form factor meets cooling needs
- Consider expected operating environment (temperature, dust) and maintenance access
Usage recommendations
For reliable long-term operation, mount the fan on a sturdy surface to reduce vibration, provide a dust filter if operating in dusty conditions, and schedule regular inspections. When replacing a larger fan, measure airflow requirements to determine if multiple small fans or a higher-capacity unit is more appropriate.
