Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade. 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.
- ImpellerØ190 mm7.5 in
- Max airflow731 m³/h430 CFM
- Max static pressure453 Pa1.82 in. wg
- Voltage24 V
- Speed3,100 rpm
- Input power75 W
- Noise70 dB(A)
LWBD3G190-072NM-04 DC Backward Curved Centrifugal Fan Ø190 mm
Ø190 mm | DC | Max airflow 731 m³/h | Max static pressure 453 Pa | 70 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Engineering files (on request)
CAD files exist for this model and can be released for assembly checks in SolidWorks / CATIA / Creo / Inventor.
CAD models contain the blade geometry and are not downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.
Downloads for LWBD3G190-072NM-04
PDFDatasheetNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBD3G190-072NM-04 is a LONGWELL DC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø190 mm, rated 24 V DC, maximum airflow 731 m³/h, maximum static pressure 453 Pa, noise 70 dB(A), input power 75 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWBD3G190-072NM-04 |
|---|---|
| Series | LWBD3G190 |
| Motor type | DC |
| Rated voltage | 24 V |
| Current | 3.1 A |
| Input power | 75 W |
| Speed | 3,100 rpm |
| Max. airflow | 731 m³/h |
| Max. static pressure | 453 Pa |
| Noise | 70 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -40 ~ 75℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø190 mm |
| Rotor diameter | 72 |
| Impeller material | PA6+GF ( Impeller ) Bearing ball bearings Weight APPROX 1.05 (Kg) LONGWELL ELL LON Version number : A0 NINGBO LONGWELL ELECTRIC TECHNOLOGY CO.,LTD . Phone: 0086 574 6218 9863 FAX : 0086 574 6218 9863 www.longwellfans.com |
| Protection class | IP42 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Vibration standard | JB/T 8689 |
| Service life | 50,000Hours(L10), At40 °Croom, humidity 15%~65%RH. Balancing According to JB/T 9101-1999 requirements G6.3 Vibration of the fan Test method accord with JB/T 8689 Installation method Horizontal or vertical installation Mater |
| Rotation | Clockwise,seen on rotor |
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 LWBD3G190: 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 (Ø190 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 | |
|---|---|---|---|---|---|---|---|
| LWBD3G190-072NM-04 this model | 731 m³/h | 453 Pa | 3,100 rpm | 75 W | 70 dB(A) | 24 V | |
| LWBD3G190-092NH-07 | 505 m³/h | 412 Pa | 3,300 rpm | 85 W | 73 dB(A) | 48 V | View |
| LWBD3G190-092NM-06 | 505 m³/h | 412 Pa | 3,300 rpm | 85 W | 73 dB(A) | 24 V | View |
| LWBD3G190-072NH-05 | 731 m³/h | 453 Pa | 3,100 rpm | 75 W | 70 dB(A) | 48 V | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Related products
Other models in the LWBD3G190 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWFD3G197-072DZ-01Ø197 mm · 1,197 m³/h · 525 Pa · DCadjacent size
LWBA2E180-092NS-03Ø180 mm · 443 m³/h · 335 Pa · ACadjacent size
LWFE3G200-102SS-01Ø200 mm · 1,638 m³/h · 700 Pa · ECadjacent size
LWBA2E180-092NS-01Ø180 mm · 443 m³/h · 335 Pa · ACadjacent size
LWBA2E180-092NS-02Ø180 mm · 494 m³/h · 371 Pa · ACadjacent size
LWFE3G180-092SS-02Ø180 mm · 927 m³/h · 824 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWDA-200(8")S-PWN-10Ø200 mm · 735 m³/h · 303 Pa · ACsimilar duty
LWFA2E133-092DS-08Ø133 mm · 726.15 m³/h · 381.1 Pa · ACsimilar duty
LWFA2E146-092DS-10Ø146 mm · 736 m³/h · 515 Pa · ACsimilar duty
LWCD-65620MN-07Ø65 mm · 722 m³/h · 53 Pa · DCsimilar duty
LWCD-65620LN-06Ø65 mm · 722 m³/h · 53 Pa · DCsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point