Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (10 here, rated 230 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.
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 airflow432.6 m³/h255 CFM
- Max static pressure432.6 Pa1.74 in. wg
- Voltage230 V
- Speed4,400 rpm
- Input power53 W
- Noise70 dB(A)
LWBE3G133-072NS-08 EC Backward Curved Centrifugal Fan Ø133 mm
Ø133 mm | EC | Max airflow 432.6 m³/h | Max static pressure 432.6 Pa | 70 dB(A)
- 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 catalogueEC ( ) EC Backward centrifugal fans #2 · SKU on PDF p. 7
All files for LWBE3G133-072NS-086 files · direct download
PDFFull product catalogue · model on PDF p. 7WEBPDimensional drawingWEBPPerformance curveWEBPWiring diagramDOCXDatasheet
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
Proven in: AHU & ventilation unit fans · CRAH FanGrid retrofit · Heat pump fan programme — all case studies on longwellfans.com
Cross-reference: same impeller size class as ebm-papst K3G133 — side-by-side comparison on longwellfans.com. Mounting is confirmed against the LONGWELL drawing before ordering.
Typical applications: Air conditioning · Air handling units · FanGrid arrays · FFU / EFU — all industries
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 LWBE3G133-072NS-08
PDFFull product catalogue · EC ( ) EC Backward centrifugal fans #2 · model on PDF p. 7 · 27 MBPDFDatasheet · 864 KBDOCXDatasheet · 678 KBNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBE3G133-072NS-08 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø133 mm, rated 230 V EC, maximum airflow 432.6 m³/h, maximum static pressure 432.6 Pa, noise 70 dB(A), input power 53 W. The EC motor integrates the drive electronics: stepless speed control by 0–10 V or PWM signal, speed feedback and high efficiency at part load.
Technical data
| Model | LWBE3G133-072NS-08 |
|---|---|
| Series | LWBE3G133 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 0.38 A |
| Input power | 53 W |
| Speed | 4,400 rpm |
| Max. airflow | 432.6 m³/h |
| Max. airflow (CFM) | 255 CFM |
| Max. static pressure | 432.6 Pa |
| Noise | 70 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø133 mm |
| Rotor diameter | 72 mm |
| Impeller material | PA6+GF30% ( Impeller ) |
| Protection class | IP55 |
| Insulation class | B |
| Bearing | Maintenance-free deep groove ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 40,000Hours(L10), At 40 °Croom, humidity 15%~65%RH |
| 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 LWBE3G133: 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 · EC)
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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G133-072NS-08 this model | 432.6 m³/h | 432.6 Pa | 4,400 rpm | 53 W | 70 dB(A) | 230 V | |
| LWBE3G133-072NU-09 | 267.8 m³/h | 453.2 Pa | 3,800 rpm | 30 W | 63 dB(A) | 115 V | View |
| LWBE3G133-072NS-07 | 267.8 m³/h | 453.2 Pa | 3,800 rpm | 30 W | 63 dB(A) | 230 V | View |
| LWFE3G133-072SS-01 | 319 m³/h | 191 Pa | 2,050 rpm | 65 W | 68 dB(A) | 230 V | View |
| LWBE3G133-072NU-10 | 432.6 m³/h | 432.6 Pa | 4,400 rpm | 53 W | 70 dB(A) | 115 V | View |
| LWFE3G133-072NS-01 | 433 m³/h | 288 Pa | 2,290 rpm | 85 W | 63 dB(A) | 230 V | View |
| LWBE3G133-072PS-06 | 473 m³/h | 609 Pa | 5,200 rpm | 72 W | 68 dB(A) | 230 V | View |
| LWBE3G133-072NS-06 | 473 m³/h | 609 Pa | 5,220 rpm | 72 W | 68 dB(A) | 230 V | View |
| LWFE3G133-092DS-03 | 690 m³/h | 330 Pa | 1,550 rpm | 80 W | 69 dB(A) | 230 V | View |
| LWFE3G133-072DS-01 | 773 m³/h | 288 Pa | 1,750 rpm | 105 W | 69 dB(A) | 230 V | View |
| LWFE3G133-072DS-02 | 979 m³/h | 484 Pa | 1,450 rpm | 120 W | 70 dB(A) | 230 V | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Other models in the LWBE3G133 seriesSame impeller, different speed grade or wiring
LWBE3G133-072NS-07Ø133 mm · 267.8 m³/h · 453.2 Pa · ECsame series
LWBE3G133-072NU-09Ø133 mm · 267.8 m³/h · 453.2 Pa · ECsame series
LWBE3G133-072NU-10Ø133 mm · 432.6 m³/h · 432.6 Pa · ECsame series
LWBE3G133-072NS-06Ø133 mm · 473 m³/h · 609 Pa · ECsame series
LWBE3G133-072PS-06Ø133 mm · 473 m³/h · 609 Pa · ECsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWFD3G140-072SH-02Ø140 mm · 464 m³/h · 453 Pa · DCadjacent size
LWFA2E140-092NS-01Ø140 mm · 335 m³/h · 330 Pa · ACadjacent size
LWFD3G140-072SM-02Ø140 mm · 464 m³/h · 453 Pa · DCadjacent size
LWFD3G140-072SH-01Ø140 mm · 464 m³/h · 453 Pa · DCadjacent size
LWFE3G140-072SS-01Ø140 mm · 453 m³/h · 783 Pa · ECadjacent size
LWFA2E140-092NS-02Ø140 mm · 314 m³/h · 484 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWFE3G120-072DS-01Ø120 mm · 433 m³/h · 263 Pa · ECsimilar duty
LWBE3G155-072PS-01Ø155 mm · 433 m³/h · 371 Pa · ECsimilar duty
LWFA2E120-092DS-03Ø120 mm · 433 m³/h · 309 Pa · ACsimilar duty
LWFE3G133-072NS-01Ø133 mm · 433 m³/h · 288 Pa · ECsimilar duty
LWBE3G155-072NS-02Ø155 mm · 433 m³/h · 371 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point