Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (8 here, rated 115 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.
- ImpellerØ310 mm12.2 in
- Max airflow2,523.5 m³/h1,485 CFM
- Max static pressure669.5 Pa2.69 in. wg
- Voltage115 V
- Speed2,050 rpm
- Input power220 W
- Noise66 dB(A)
LWBE3G310-092NU-29 EC Backward Curved Centrifugal Fan Ø310 mm
Ø310 mm | EC | Max airflow 2,523.5 m³/h | Max static pressure 669.5 Pa | 66 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. 24
All files for LWBE3G310-092NU-294 files · direct download
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 K3G310, ebm-papst R3G310, ebm-papst RadiPac 310, Ziehl-Abegg RH31C — 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
LONGWELL 310mm EC Backward Curved Centrifugal Fan for High-Efficiency HVAC & Air Handling | LWBE3G310 · open in video library
Quiet & Stable, Rooted in Precision Dynamic Balancing | LWBE3G310-102NS · open in video library
Downloads for LWBE3G310-092NU-29
PDFDatasheetPDFFull product catalogue · EC ( ) EC Backward centrifugal fans #2 · model on PDF p. 24 · 27 MBNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBE3G310-092NU-29 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø310 mm, rated 115 V EC, maximum airflow 2,523.5 m³/h, maximum static pressure 669.5 Pa, noise 66 dB(A), input power 220 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 | LWBE3G310-092NU-29 |
|---|---|
| Series | LWBE3G310 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 115 V |
| Frequency | 50 Hz |
| Current | 3.1 A |
| Input power | 220 W |
| Speed | 2,050 rpm |
| Max. airflow | 2,523.5 m³/h |
| Max. airflow (CFM) | 1,485 CFM |
| Max. static pressure | 669.5 Pa |
| Noise | 66 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø310 mm |
| Rotor diameter | 92 mm |
| Impeller material | Aluminum Alloy ( 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 LWBE3G310: 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 (Ø310 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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G310-092NU-29 this model | 2,523.5 m³/h | 669.5 Pa | 2,050 rpm | 220 W | 66 dB(A) | 115 V | |
| LWBE3G310-092PS-11 | 2,235 m³/h | 474 Pa | 1,850 rpm | 160 W | 75 dB(A) | 230 V | View |
| LWBE3G310-092PS-12 | 2,410 m³/h | 443 Pa | 1,750 rpm | 150 W | 75 dB(A) | 230 V | View |
| LWBE3G310-092NS-17 | 2,410 m³/h | 443 Pa | 1,750 rpm | 150 W | 75 dB(A) | 230 V | View |
| LWBE3G310-102NS-16 | 2,868.6 m³/h | 630 Pa | 2,150 rpm | 285 W | 70 dB(A) | 230 V | View |
| LWBE3G310-102PS-02 | 2,869 m³/h | 630 Pa | 2,150 rpm | 285 W | 70 dB(A) | 230 V | View |
| LWBE3G310-102PS-16 | 2,884 m³/h | 963 Pa | 2,600 rpm | 450 W | 78 dB(A) | 230 V | View |
| LWBE3G310-102NS-18 | 2,884 m³/h | 963 Pa | 2,600 rpm | 450 W | 78 dB(A) | 230 V | View |
| LWBE3G310-102PS-15 | 2,936 m³/h | 700 Pa | 2,300 rpm | 370 W | 76 dB(A) | 230 V | View |
| LWBE3G310-102NS-19 | 2,936 m³/h | 700 Pa | 2,300 rpm | 370 W | 76 dB(A) | 230 V | View |
| LWBE3G310-138PT-04 | 4,398 m³/h | 824 Pa | 2,600 rpm | 980 W | 74 dB(A) | 400 V | View |
| LWBE3G310-138NT-05 | 4,398.1 m³/h | 824 Pa | 2,600 rpm | 980 W | 74 dB(A) | 400 V | View |
| LWFE3G310-102PT-09 | 5,150 m³/h | 1,730.4 Pa | 3,000 rpm | 1,100 W | 85 dB(A) | 400 V | View |
| LWBE3G310-138NT-25 | 5,592.9 m³/h | 1,082 Pa | 3,300 rpm | 1,588 W | 92 dB(A) | 400 V | View |
| LWBE3G310-138PT-10 | 5,593 m³/h | 1,082 Pa | 3,300 rpm | 1,588 W | 92 dB(A) | 400 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 LWBE3G310 seriesSame impeller, different speed grade or wiring
LWBE3G310-072NS-07Ø310 mm · 2,266 m³/h · 700.4 Pa · ECsame series
LWBE3G310-072NU-27Ø310 mm · 2,266 m³/h · 700.4 Pa · ECsame series
LWBE3G310-072NS-21Ø310 mm · 2,266 m³/h · 618 Pa · ECsame series
LWBE3G310-092NS-22Ø310 mm · 2,678 m³/h · 607.7 Pa · ECsame series
LWBE3G310-092NU-28Ø310 mm · 2,678 m³/h · 607.7 Pa · ECsame series
LWBE3G310-092NS-23Ø310 mm · 2,523.5 m³/h · 669.5 Pa · ECsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWBA6E315-102NS-07Ø315 mm · 1,030 m³/h · 155 Pa · ACadjacent size
LWBA4E315-102NS-04Ø315 mm · 1,957 m³/h · 412 Pa · ACadjacent size
LWBA4E315-102NS-05Ø315 mm · 1,957 m³/h · 309 Pa · ACadjacent size
LWBA4E315-102NS-06Ø315 mm · 2,163 m³/h · 412 Pa · ACadjacent size
LWBA4E315-102NS-03Ø315 mm · 1,700 m³/h · 309 Pa · ACadjacent size
LWBA6E315-102NS-08Ø315 mm · 1,133 m³/h · 185 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWAD3G300ZS-5PNW-01Ø300 mm · 2,524 m³/h · 185 Pa · DCsimilar duty
LWAD3G300ZB-5PNW-02Ø300 mm · 2,524 m³/h · 185 Pa · DCsimilar duty
LWAD3G300ZS-5PEW-03Ø300 mm · 2,524 m³/h · 185 Pa · DCsimilar duty
LWAD3G300ZB-5PEW-04Ø300 mm · 2,524 m³/h · 185 Pa · DCsimilar duty
LWAD3G300ZS-5PKW-05Ø300 mm · 2,524 m³/h · 185 Pa · DCsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point