LWFD3 series dimensional drawing (shared by several models)

LWFD3 series performance curve (shared by several models)

Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.

ImpellerØ133 mm5.2 in
Max airflow721 m³/h424 CFM
Max static pressure515 Pa2.07 in. wg
Voltage24 V
Speed1,780 rpm
Input power105 W
Noise62 dB(A)

LWFD3G133-072DM-02 DC Dual Inlet Forward Centrifugal Blower Ø133 mm

Ø133 mm | DC | Max airflow 721 m³/h | Max static pressure 515 Pa | 62 dB(A)

SKU: LWFD3G133-072DM-02 Categories: Centrifugal Fans, Dual Inlet Forward Curved Blowers, Impeller Ø120–146 mm

Factory direct
OEM / ODM
Samples in 1–3 days
Production 15–30 days
12-month warranty
CE · ETL · RoHS

PDFDatasheet (PDF)electrical & performance dataPDFFull product catalogueDC DC Dual Inlet Forward Centrifugal Blower · SKU on PDF p. 7

All files for LWFD3G133-072DM-024 files · direct download

PDFFull product catalogue · model on PDF p. 7 WEBPDimensional drawing (series)WEBPPerformance curve

CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center

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Typical applications: Range hoods · Air heaters · Fan coil units · Appliances — all industries

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Files for LWFD3G133-072DM-02datasheet · catalogue · drawings · curves — listed above

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Required airflow Required static pressure

Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (1 here, rated 24 V). Data version: catalogue 2026-08. The system resistance curve depends on the actual ductwork — confirm the operating point on site. Need an engineer to verify the duty point? Contact us or add the model to your RFQ and note the duty point.

LWFD3G133-072DM-02 Dimensional drawing (series) — **Dimensional drawing (series)**Series drawing from the catalogue; dimensions in mm apply to the size of this model as listed in the table.

LWFD3G133-072DM-02 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

Downloads for LWFD3G133-072DM-02

PDFDatasheet PDFFull product catalogue · DC DC Dual Inlet Forward Centrifugal Blower · model on PDF p. 7 · 8.7 MB

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

LWFD3G133-072DM-02 is a LONGWELL DC Dual Inlet Forward Centrifugal Blower from the Dual Inlet Forward Curved Blowers range, impeller Ø133 mm, rated 24 V DC, maximum airflow 721 m³/h, maximum static pressure 515 Pa, noise 62 dB(A), input power 105 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.

Technical data

Model	LWFD3G133-072DM-02
Series	LWFD3G133
Motor type	DC
Rated voltage	24 V
Current	5.6 A
Input power	105 W
Speed	1,780 rpm
Max. airflow	721 m³/h
Max. static pressure	515 Pa
Noise	62 dB(A)
Ambient temperature	-30 ~ 60 °C
Impeller diameter	Ø133 mm
Rotor diameter	72 mm
Insulation class	F
Bearing	Maintenance-free ball bearings
Duty	S1

Typical applications

Air handling units (AHU) and rooftop units (RTU)
Data-center CRAH / CRAC units and fan walls
Dust extraction and process ventilation
Fan filter units and air purifiers

Series LWFD3G133: 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 impeller (Ø133 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
LWFD3G133-072DM-02 this model	721 m³/h	515 Pa	1,780 rpm	105 W	62 dB(A)	24 V
LWFD3G133-072SZ-01	319 m³/h	319 Pa	2,100 rpm	65 W	59 dB(A)	310 V	View
LWFD3G133-072SH-01	319 m³/h	258 Pa	2,040 rpm	48 W	63 dB(A)	48 V	View
LWFD3G133-072SM-01	319 m³/h	258 Pa	2,040 rpm	48 W	63 dB(A)	24 V	View
LWBD3G133-072NH-03	386 m³/h	335 Pa	3,900 rpm	28 W	65 dB(A)	48 V	View
LWBD3G133-072NM-02	386 m³/h	335 Pa	3,900 rpm	28 W	65 dB(A)	24 V	View
LWFD3G133-092DZ-02	679.8 m³/h	329.6 Pa	1,550 rpm	80 W	69 dB(A)	310 V	View
LWFD3G133-092DZ-01	679.8 m³/h	329.6 Pa	1,550 rpm	80 W	69 dB(A)	310 V	View
LWFD3G133-072DH-02	721 m³/h	515 Pa	1,780 rpm	105 W	62 dB(A)	48 V	View
LWFD3G133-092DH-01	772.5 m³/h	293.55 Pa	1,750 rpm	110 W	66 dB(A)	48 V	View
LWFD3G133-092DM-01	772.5 m³/h	293.55 Pa	1,750 rpm	110 W	66 dB(A)	24 V	View
LWFD3G133-092DH-03	978.5 m³/h	484.1 Pa	1,560 rpm	120 W	68 dB(A)	48 V	View
LWFD3G133-092DM-03	978.5 m³/h	484.1 Pa	1,560 rpm	120 W	68 dB(A)	24 V	View
LWFD3G133-072DM-04	1,112.4 m³/h	597.4 Pa	1,580 rpm	118 W	64 dB(A)	24 V	View
LWFD3G133-072DH-04	1,112.4 m³/h	597.4 Pa	1,580 rpm	118 W	64 dB(A)	48 V	View