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BLDC Motor · 5/12/24/48V · IP68 Option

140mm DC Axial Fans Manufacturer

4 BLDC axial fan models (55 part numbers) in the 140mm frame, from MAX FLOW. Airflow 62.1–360.8 CFM, up to 37.9 mmH2O static pressure, 28–68.1 dB(A). Each model has a datasheet with P-Q curve and dimensions.

140mmSize Range
4Voltages
PWMSpeed Control
4Signals (PWM/FG/RD/LD)

140mm DC axial fans from MAX FLOW

MAX FLOW has supplied industrial cooling fans since 1984. This page lists our 140mm DC brushless (BLDC) axial fans: 4 models and 55 part numbers across 25/38/50 mm frame depths, in 12V, 24V, 48V DC. Airflow ranges from 62.1 to 360.8 CFM, speed from 1500 to 6500 RPM and noise from 28 to 68.1 dB(A), so you can match the fan to the static pressure and noise budget of your equipment. Control options include PWM speed control, FG tachometer feedback and RD lock-alarm output, and IP55 or IP68 waterproof variants are available on select models. Custom voltage, speed and wiring are available on request.

Not sure which 140mm fan fits? Read How to Choose an Industrial DC Cooling Fan, How to Read a Fan P-Q Curve, or use the Product Finder to filter by voltage, airflow and bearing type. All DC fans: DC Fan overview.

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DC axial fans by size: 80mm 92mm 120mm 140mm 172mm All sizes

140mm DC Axial Fans

MFD14025

MFD14025

140x140x25mm

Airflow 62.07~133.43 CFM
Noise 28~47.1 dB(A)
Speed 1500~2900 RPM
View Datasheet
MFD14038

MFD14038

140x140x38mm

Airflow 133.3~307.25 CFM
Noise 43.8~68 dB(A)
Speed 1800~6500 RPM
View Datasheet
MFD14038B

MFD14038B

140x140x38mm

Airflow 167.7~254.89 CFM
Noise 55.8~67.8 dB(A)
Speed 4500~6500 RPM
View Datasheet
MFD14050

MFD14050

140x140x50mm

Airflow 229.46~360.8 CFM
Noise 59.4~68.1 dB(A)
Speed 2800~4300 RPM
View Datasheet

140mm DC axial fan selection data

FrameModelsVoltagesAirflow (CFM)Max static pressure (mmH2O)Noise (dB(A))
140 x 140 x 25 mm112V, 24V, 48V62.1–133.45.328–47.1
140 x 140 x 38 mm212V, 24V, 48V133.3–307.237.943.8–68
140 x 140 x 50 mm112V, 24V, 48V229.5–360.829.459.4–68.1

How to choose a 140mm DC axial fan

  • Highest airflow: MFD14050 (48V) delivers 360.8 CFM at 4300 RPM and 68.1 dB(A), with 29.4 mmH2O static pressure.
  • Highest static pressure: MFD14038B (12V) has a maximum static pressure of 37.9 mmH2O (max. airflow 254.9 CFM), the better choice when the airflow path has dense fins or filters.
  • Quietest: MFD14025 (12V) runs at 28 dB(A) with 62.1 CFM at 1500 RPM.
  • Thickness matters: the 25mm-deep fans reach up to 133.4 CFM and 5.3 mmH2O, while the 50mm-deep fans reach up to 360.8 CFM and 29.4 mmH2O. Choose the thinner frame when space is tight and the thicker frame when static pressure is the constraint.
  • Voltage: 12V / 24V / 48V DC rails are available across the 140mm range (check each datasheet, since not every model comes in every voltage).

140mm DC axial fan FAQ

What voltages are available for 140mm DC axial fans?

MAX FLOW 140mm DC axial fans are offered in 12V, 24V, 48V DC. Not every model is available in every voltage, so confirm the rated voltage on the datasheet of the model you choose.

How much airflow does a 140mm DC axial fan deliver?

Across MAX FLOW 140mm DC axial fans, maximum airflow ranges from 62.1 to 360.8 CFM depending on model, thickness and speed. The highest is MFD14050 at 360.8 CFM.

Which 140mm DC axial fan is the quietest?

The quietest rated variant is MFD14025D1-LB at 28 dB(A) (62.1 CFM, 1500 RPM). Noise rises with speed, so pick the lowest speed that still meets your airflow and static pressure requirement.

Where can I find the P-Q curve and dimensions of a 140mm DC axial fan?

Every model listed on this page links to a datasheet with the dimension drawing, P-Q curve and the full part number table.

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