Frame size40 mm1.6 in
Max airflow23.4 m³/h14 CFM
Max static pressure104 Pa0.42 in. wg
Voltage24 V
Speed10,000 rpm
Input power4.32 W
Noise45.4 dB(A)

LWAD4028MM-03 DC Axial Cooling Fan 40 mm

40 mm | DC | Max airflow 23.4 m³/h | Max static pressure 104 Pa | 45.4 dB(A)

SKU: LWAD4028MM-03 Categories: Cooling Fans & Blowers, DC Axial Cooling Fans, Frame 25–40 mm

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Samples in 1–3 days
Production 15–30 days
18-month warranty
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Drawings & downloads
Technical description

LWAD4028MM-03 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWAD4028MM-03 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

Need a non-standard size or another format? Ask an engineer or search the download center.

LWAD4028MM-03 is a LONGWELL DC Axial Cooling Fan from the DC Axial Cooling Fans range, frame size 40 mm, rated 24 V DC, maximum airflow 23.4 m³/h, maximum static pressure 104 Pa, noise 45.4 dB(A), input power 4.32 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.

Technical data

Model	LWAD4028MM-03
Series	LWAD4028
Motor type	DC
Rated voltage	24 V
Current	0.18 A
Input power	4.32 W
Speed	10,000 rpm
Max. airflow	23.4 m³/h
Max. static pressure	104 Pa
Noise	45.4 dB(A)
Frame size	40 mm
Dimensions	40x28mm
Impeller material	Plastic(UL94-VO)

Typical applications

Power supplies and inverters
Telecom and server cabinets
Battery packs and EV chargers
Medical and laboratory equipment

Series LWAD4028: models in the same series share the impeller and motor platform and differ in speed grade, voltage or lead-out / terminal-box configuration — compare them in the table below or ask for the best fit at your duty point.

Nameplate values: maximum airflow is measured at zero static pressure and maximum static pressure at zero airflow; the two never occur together. Confirm the operating point on the performance curve. Final selection is subject to the duty point (airflow / static pressure / voltage / control mode) and project verification.

Alternatives with the same frame size (40 mm · DC)

Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.

Model	Max airflow	Max static pressure	Speed	Power	Noise	Voltage
LWAD4028MM-03 this model	23.4 m³/h	104 Pa	10,000 rpm	4.32 W	45.4 dB(A)	24 V
LWCD-40250MN-07	87 m³/h	23 Pa	2,400 rpm	2.64 W	35 dB(A)	24 V	View
LWCD-40290MN-07	104 m³/h	24 Pa	2,400 rpm	3.12 W	35 dB(A)	24 V	View
LWCD-40290LN-06	104 m³/h	24 Pa	2,400 rpm	2.4 W	35 dB(A)	12 V	View
LWCD-40350MN-07	121 m³/h	24 Pa	2,400 rpm	3.6 W	36 dB(A)	24 V	View
LWCD-40350LN-06	121 m³/h	24 Pa	2,400 rpm	2.88 W	36 dB(A)	12 V	View
LWCD-40420MN-07	146 m³/h	25 Pa	2,400 rpm	4.08 W	37 dB(A)	24 V	View
LWCD-40420LN-06	146 m³/h	25 Pa	2,400 rpm	3.48 W	37 dB(A)	12 V	View
LWCD-40530MN-06	176 m³/h	25 Pa	2,400 rpm	4.56 W	37 dB(A)	24 V	View
LWCD-40610MN-06	203 m³/h	26 Pa	2,400 rpm	5.04 W	37 dB(A)	24 V	View
LWCD-40700MN-06	232 m³/h	26 Pa	2,400 rpm	5.52 W	38 dB(A)	24 V	View
LWCD-40800MN-06	236 m³/h	25 Pa	2,000 rpm	6 W	35 dB(A)	24 V	View
LWCD-40854MN-06	252 m³/h	26 Pa	2,000 rpm	6.72 W	35 dB(A)	24 V	View
LWCD-40920MN-06	272 m³/h	26 Pa	2,000 rpm	7.44 W	36 dB(A)	24 V	View
LWCD-401055MN-06	311 m³/h	27 Pa	2,000 rpm	8.4 W	36 dB(A)	24 V	View