12 VDC Brushless Motor
This DC brushless axial fan is designed for compatible 12 VDC cooling systems, with a listed rated current of 0.73 A.
NIDEC
Nidec W40S12BS4A5-57 DC Axial Fan 12V 0.73A 40x40x28mm
$10.48
Available
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NIDEC
Nidec W40S12BS4A5-57 DC Axial Fan 12V 0.73A 40x40x28mm
PRODUCT PRICE
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$10.48
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Nidec UltraFlo |
| Model Number | W40S12BS4A5-57 |
| Product Category | DC Brushless Axial Cooling Fan |
| Fan Series | UltraFlo W40S Series |
| Rated Voltage | 12 VDC |
| Operating Voltage Range | 7.0–13.2 VDC |
| Rated Current | 0.73 A |
| Rated Input Power | 8.76 W |
| Rated Speed | 18,500 RPM |
| Maximum Airflow | 0.75 m³/min (26.5 CFM) |
| Maximum Static Pressure | 537 Pa (2.16 inH₂O) |
| Sound Pressure Level | 58.5 dB(A) |
| Frame Dimensions | 40 x 40 x 28 mm |
Key Features
Compact 40 x 40 x 28 mm Frame
The 40 mm square frame and 28 mm thickness provide a defined mounting size for compact equipment and server cooling assemblies.
18,500 RPM Rated Speed
The listed nominal speed is 18,500 RPM, supporting high-speed air movement in compatible equipment.
26.5 CFM Maximum Airflow
The supplier lists maximum airflow of 0.75 m³/min (26.5 CFM). Actual airflow depends on the resistance of the equipment airflow path.
High Static Pressure
The listed maximum static pressure is 537 Pa (2.16 inH₂O), providing a reference when selecting fans for restrictive ventilation paths.
PWM Speed Control
The four-wire configuration includes a PWM control lead for compatible speed-management systems. Confirm the control signal requirements before installation.
Tachometer Feedback
The tachometer output can provide fan rotation feedback to compatible monitoring circuits and help identify cooling-system faults.
Double Ball Bearings
The listed double ball-bearing construction supports rotating operation in compatible industrial and electronic cooling applications.
Applications
- Server chassis cooling
- Network equipment ventilation
- Industrial computer cooling
- Compact electronic enclosure airflow
- Power electronics thermal management
- Industrial controller cooling
- High-speed equipment ventilation
- Replacement of compatible 40 mm fan assemblies
Purchase Information
We support purchase inquiries for the Nidec UltraFlo W40S12BS4A5-57 DC Axial Cooling Fan. For bulk orders or related industrial cooling components, contact our team with your required quantity and application details. Before ordering, verify the complete model number, 12 VDC supply, 0.73 A current rating, 40 x 40 x 28 mm dimensions, four-wire connector, airflow direction and PWM/tachometer compatibility. Confirm that the selected fan matches the existing equipment's electrical and mechanical requirements.
Frequently Asked Questions
What is Nidec W40S12BS4A5-57?
It is a Nidec UltraFlo W40S series DC brushless axial cooling fan designed for compatible electronic and equipment cooling applications.
What is the rated voltage?
The listed rated voltage is 12 VDC. The supplier lists an operating voltage range of 7.0–13.2 VDC for this specific model.
What is the rated current and power consumption?
The listed rated current is 0.73 A, corresponding to a nominal input power of 8.76 W at 12 VDC.
What are the fan dimensions?
The listed frame dimensions are 40 x 40 x 28 mm. Check the mounting holes and available clearance before installing a replacement.
What is the rated speed?
The supplier lists a nominal rotational speed of 18,500 RPM.
What is the maximum airflow?
The listed maximum airflow is 0.75 m³/min, equivalent to approximately 26.5 CFM. Actual airflow varies with system resistance.
What is the maximum static pressure?
The listed maximum static pressure is 537 Pa, equivalent to approximately 2.16 inH₂O.
Does this fan support PWM speed control?
Yes. The listed four-wire configuration includes a PWM control lead. Verify the compatible signal level and control method against the equipment documentation.
Does the fan provide rotation feedback?
Yes. The listed configuration includes a tachometer signal output for compatible fan monitoring systems.
What is the function of each wire?
The listed wiring convention is red for power, black for ground, yellow for tachometer output and blue for PWM control. Verify the pinout on the actual fan before connection.
What is the operating temperature range?
The supplier lists an operating temperature range of -10°C to +70°C and a storage range of -40°C to +70°C.
Can this fan replace another 40 mm fan?
Not automatically. Check the complete model number, frame thickness, rated voltage, current, airflow, static pressure, connector pinout and PWM/tachometer requirements before replacement.
What should be checked before ordering?
Confirm model W40S12BS4A5-57, 12 VDC rating, 0.73 A current, 8.76 W input, 40 x 40 x 28 mm dimensions and four-wire PWM/tachometer connection against your equipment specifications.
Need help confirming a model?
Send us your part number and technical requirements.
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