SANYO DENKI San Ace 9BMB24P2K01 24V 9733 DC Blower for High Static Pressure Cooling
The SANYO DENKI San Ace 9BMB24P2K01 is a 97 × 33 mm DC blower designed for cooling equipment where airflow resistance and heat density are important considerations. Operating at 24 V, this model combines a relatively compact form factor with high rotational speed, substantial airflow and high static pressure.
As part of the San Ace 9733 blower lineup, the 9BMB24P2K01 is particularly suitable for equipment in which conventional axial fans may struggle to maintain sufficient airflow after passing through ducts, filters, heat sinks or other airflow restrictions.
1. 97 × 33 mm Compact Blower Design
The 9BMB24P2K01 has a nominal size of 97 mm × 33 mm, providing a compact cooling solution for equipment with limited internal installation space.
Unlike a conventional axial fan, a blower is designed to discharge air in a direction approximately 90 degrees from the intake direction. This configuration can simplify internal airflow routing and reduce the need for additional external duct structures.
For compact electronic equipment, the arrangement of components often makes straight-through airflow difficult. A blower can therefore provide greater flexibility when designing the cooling path.
2. 1280 Pa Maximum Static Pressure
One of the key specifications of the 9BMB24P2K01 is its 1280 Pa maximum static pressure, equivalent to approximately 5.14 inchH₂O.
Static pressure becomes particularly important when the cooling system contains significant airflow resistance.
Examples include:
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Heat sinks with dense fins
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Air filters
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Narrow ventilation passages
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Internal ducts
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Protective grilles
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High-density electronic assemblies
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Compact server enclosures
In these applications, selecting a fan only according to maximum airflow can result in insufficient actual airflow once the fan is installed in the equipment.
The high static-pressure capability of the 9BMB24P2K01 makes it better suited to systems where the fan must overcome airflow resistance.
3. 56.8 CFM Maximum Airflow
The 9BMB24P2K01 provides a maximum airflow of 1.61 m³/min, or 56.8 CFM.
This airflow capability provides a useful combination with its 1280 Pa maximum static pressure.
However, maximum airflow and maximum static pressure represent different points on a fan performance curve. The actual operating airflow depends on the system resistance of the target equipment.
For engineering selection, it is therefore recommended to evaluate the fan together with the equipment's pressure-loss characteristics rather than using the maximum airflow value alone.
4. 24V DC Operation and 38.88W Rated Power
The 9BMB24P2K01 operates at a rated voltage of 24 V DC with a rated current of 1.62 A.
Its rated power is approximately 38.88 W.
The 24V configuration makes this model suitable for electronic systems and industrial equipment using 24V DC power architectures.
Typical applications may include:
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Industrial control equipment
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Communication equipment
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Server and storage systems
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Power electronics
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Network equipment
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High-density electronic devices
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Industrial automation systems
For equipment already equipped with a 24V DC power rail, a 24V blower can also simplify the power architecture of the cooling subsystem.
5. 6850 min⁻¹ Rated Speed
The rated rotational speed of the 9BMB24P2K01 is 6850 min⁻¹.
The relatively high rotational speed contributes to its ability to generate both airflow and static pressure within the compact 97 × 33 mm form factor.
For equipment designers, however, fan speed should not be considered independently from noise, system impedance and thermal requirements. The appropriate operating point should be determined according to the actual thermal load and airflow path.
6. PWM Control for Dynamic Cooling Management
The 9BMB24P2K01 supports PWM control and includes a pulse sensor.
This provides additional flexibility for equipment manufacturers designing intelligent thermal management systems.
Instead of continuously operating the blower at its rated speed, the equipment controller can adjust the fan operating condition according to parameters such as:
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Internal temperature
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CPU or processor load
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Power-module temperature
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Ambient temperature
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System operating mode
During low-load operation, reducing the blower speed can help lower acoustic output and power consumption. When the thermal load increases, the cooling system can increase fan speed accordingly.
This approach is particularly useful for equipment that experiences significant changes in thermal load during operation.
7. Pulse Sensor for Fan Monitoring
The built-in pulse sensor provides a means of monitoring fan rotation.
This can be incorporated into equipment control logic for functions such as:
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Fan speed monitoring
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Cooling system diagnostics
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Fan failure detection
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Preventive maintenance
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System alarm management
For applications where continuous operation and reliability are important, monitoring the cooling fan can be an important part of the overall equipment protection strategy.
8. Designed for High-Resistance Cooling Systems
The characteristics of the 9BMB24P2K01 make it particularly relevant to equipment where the cooling path cannot be treated as an open-air environment.
A typical high-resistance cooling path may contain several components:
Air inlet → filter → blower → heat sink → electronic components → exhaust
Every component in this path introduces pressure loss.
As system impedance increases, the actual airflow generated by a fan decreases. This is why high-static-pressure capability can become more important than simply selecting the model with the highest free-air CFM.
The 9BMB24P2K01 offers a combination of 56.8 CFM maximum airflow and 1280 Pa maximum static pressure, making it a candidate for compact systems with relatively high airflow resistance.
9. Main Specifications of 9BMB24P2K01
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Parameter
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Specification
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Model
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9BMB24P2K01
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Brand
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SANYO DENKI / San Ace
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Product type
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DC Blower
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Size
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97 × 33 mm
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Rated voltage
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24 V DC
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Rated current
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1.62 A
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Rated power
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38.88 W
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Rated speed
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6850 min⁻¹
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Maximum airflow
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1.61 m³/min
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Maximum airflow
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56.8 CFM
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Maximum static pressure
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1280 Pa
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Maximum static pressure
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5.14 inchH₂O
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Noise
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66 dBA
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Sensor
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Pulse sensor
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PWM control
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Yes
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Expected life
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40,000 h at 60°C / 70,000 h at 40°C
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10. Where Can the 9BMB24P2K01 Be Used?
The 9BMB24P2K01 can be considered for equipment where compact installation, high airflow resistance and thermal load are all important.
Potential application areas include:
Servers and Storage Systems
High-density computing equipment can generate substantial heat while providing limited internal space for airflow channels. The blower configuration can help direct air through restricted cooling paths.
Communication and Network Equipment
Communication devices often contain densely arranged electronic components, heat sinks and airflow structures. High static pressure can be valuable when air must pass through these restrictions.
Industrial Control Equipment
Industrial control cabinets and electronic control systems may contain power supplies, processors and control modules operating continuously. A compact 24V blower can be integrated into forced-air cooling systems.
Power Electronics
Power converters, industrial power supplies and other power-electronic equipment can require forced cooling when natural convection cannot dissipate the generated heat sufficiently.
11. Selecting the Right 9733 Blower
The San Ace 9733 family includes models with different voltage, speed, power and airflow characteristics.
Therefore, the 9BMB24P2K01 should not be selected simply because it has a high airflow or high static pressure rating.
When selecting a blower for a new equipment design, engineers should evaluate:
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Required heat dissipation
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Available installation space
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System airflow resistance
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Required operating airflow
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Required static pressure
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24V power availability
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Acceptable noise level
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Fan control requirements
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Required operating lifetime
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Fan monitoring requirements
The actual operating point should ideally be evaluated using the fan performance curve together with the system impedance curve.
12. Summary
The SANYO DENKI San Ace 9BMB24P2K01 is a 97 × 33 mm, 24V DC blower designed for applications requiring a combination of compact installation and high static pressure.
With a rated speed of 6850 min⁻¹, maximum airflow of 56.8 CFM, maximum static pressure of 1280 Pa, PWM control and pulse sensor, the model can be considered for high-density electronic equipment where airflow resistance is an important part of the thermal design.
For servers, storage systems, communication equipment, industrial control systems and other compact electronic equipment, the key point is not simply how much air a blower can deliver in free air, but how much useful airflow it can maintain after overcoming the resistance of the actual cooling system.
That is where the high-static-pressure characteristics of the San Ace 9BMB24P2K01 become particularly relevant.
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