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.
- ImpellerØ175 mm
- Max airflow504 m³/h
- Max static pressure294 Pa
- Voltage230 V
- Speed2,770 rpm
- Input power36 W
- Noise60.8 dB(A)
LWBA2E175-072NS-02 AC Backward Curved Centrifugal Fan Ø175 mm
Ø175 mm | AC | Max airflow 504 m³/h | Max static pressure 294 Pa | 60.8 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.
Need a non-standard size or another format? Ask an engineer or search the download center.
LWBA2E175-072NS-02 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø175 mm, rated 230 V AC, maximum airflow 504 m³/h, maximum static pressure 294 Pa, noise 60.8 dB(A), input power 36 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA2E175-072NS-02 |
|---|---|
| Series | LWBA2E175 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 0.15 A |
| Input power | 36 W |
| Speed | 2,770 rpm |
| Max. airflow | 504 m³/h |
| Max. airflow (CFM) | 296 CFM |
| Max. static pressure | 294 Pa |
| Noise | 60.8 dB(A) |
| Ambient temperature | -30 ~ 60 °C |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 0 ~ 85 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø175 mm |
| Rotor diameter | 72 |
| Impeller material | PA6+GF ( Impeller ) |
| Protection class | IP44 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 30,000Hours(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 LWBA2E175: 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 (Ø175 mm · AC)
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 | |
|---|---|---|---|---|---|---|---|
| LWBA2E175-072NS-02 this model | 504 m³/h | 294 Pa | 2,770 rpm | 36 W | 60.8 dB(A) | 230 V | |
| LWBA2E175-092NS-05 | 443 m³/h | 288 Pa | 2,530 rpm | 52 W | 64 dB(A) | 230 V | View |
| LWBA2E175-092NS-03 | 443 m³/h | 288 Pa | 2,500 rpm | 52 W | 64 dB(A) | 230 V | View |
| LWBA2E175-092NS-04 | 505 m³/h | 386 Pa | 2,700 rpm | 66 W | 66 dB(A) | 230 V | View |
| LWBA2E175-072NU-01 | 567 m³/h | 368 Pa | 3,060 rpm | 46.1 W | 61.1 dB(A) | 115 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 LWBA2E175 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWFE3G180-092SS-02Ø180 mm · 927 m³/h · 824 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
LWBA2E180-092NS-03Ø180 mm · 443 m³/h · 335 Pa · ACadjacent size
LWFE3G180-102DS-01Ø180 mm · 2,060 m³/h · 742 Pa · ECadjacent size
LWFE3G180-092DS-02Ø180 mm · 1,730 m³/h · 247 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWFA2E133-092DS-02Ø133 mm · 505 m³/h · 402 Pa · ACsimilar duty
LWFE3G140-072SS-02Ø140 mm · 505 m³/h · 881 Pa · ECsimilar duty
LWBD3G190-092NM-06Ø190 mm · 505 m³/h · 412 Pa · DCsimilar duty
LWBD3G190-092NH-07Ø190 mm · 505 m³/h · 412 Pa · DCsimilar duty
LWFA2E150-092NS-02Ø150 mm · 500 m³/h · 649 Pa · ACsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point