Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ190 mm7.5 in
- Max airflow483 m³/h284 CFM
- Max static pressure357 Pa1.43 in. wg
- Voltage230 V
- Speed2,640 rpm
- Input power56 W
- Noise64.9 dB(A)
LWBA2E190-072NS-01 AC Backward Curved Centrifugal Fan Ø190 mm
Ø190 mm | AC | Max airflow 483 m³/h | Max static pressure 357 Pa | 64.9 dB(A)
- Direct from LONGWELL
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · RoHS · ETL on request
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
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 publicly downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.
Performance curve (P-Q) LWBA2E190-072NS-01
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 230 V). Data version: catalogue curve re-digitised 2026-09-20 (axis-calibrated, cross-checked). 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.
Video LWBA2E190-072NS-01
LWBA2E190-072NS-01 — construction, airflow path and running condition.
LONGWELL LWBA2E190 190mm AC Backward Centrifugal Fan | LWBA2E190-072NS-01 · open in video library
朗伟离心风机：驱动高效未来 | LWBA2E190-072NS-01 · open in video library
Drawing, Curve & Wiring LWBA2E190-072NS-01
Files for LWBA2E190-072NS-01: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWBA2E190-072NS-01
LWBA2E190-072NS-01 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø190 mm, rated 230 V AC, maximum airflow 483 m³/h, maximum static pressure 357 Pa, noise 64.9 dB(A), input power 56 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA2E190-072NS-01 |
|---|---|
| Series | LWBA2E190 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 0.25 A |
| Input power | 56 W |
| Speed | 2,640 rpm |
| Max. airflow | 483 m³/h |
| Max. static pressure | 357 Pa |
| Noise | 64.9 dB(A) |
| Ambient temperature | -40 ~ 65 °C |
| Storage temperature | -25 ~ 70℃ |
| Humidity | 0 ~ 85 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø190 mm |
| Rotor diameter | 72 mm |
| Impeller material | Plastic PA66 ( Impeller ) |
| Protection class | IP44 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T8689 |
| 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 LWBA2E190: 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.
Company certificates
Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO 9001 / 14001 / 45001 management-system certificate. Click a scan to open the original.
ISO 9001 / 14001 / 45001Management systems of Ningbo Longwell Electric Technology Co., Ltd. (company certificate).
PDFISO 9001 / 14001 / 45001 management system certificateNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWBA2E190-072NS-01
Most first orders follow the same eight steps. Quantities, terms and lead times are confirmed in your quotation.
- 1SelectFind models by duty point in the selector or by model number, compare on the curve and add them to your RFQ list.
- 2Engineering checkWithin 1 business day you receive the duty-point check on the curve, price and lead time.
- 3SamplesStock models ship in 1–3 days.
- 4Validation supportDatasheets, drawings, wiring diagrams and DoC per model; test reports, CAD and register maps after a short project check or NDA.
- 5Order & paymentProforma invoice; first orders on T/T 30 / 70.
- 6Production & release15–30 days at the partner factory that builds your model, then inspected and released to LONGWELL standards with outgoing sampling to AQL 2.5.
- 7ShippingFOB / CIF / DDP by sea from Ningbo or Shanghai; express and air on EXW / FCA / DAP.
- 8After-sales12 months standard, extendable to 18–24 months by project agreement; test records retained for 5 years; 8D closed-loop for any issue; annual technical review for framework customers.
Test & release at LONGWELL
Specified and drawn by LONGWELL; built to LONGWELL drawings by qualified partner factories; inspected and released to LONGWELL standards before shipment.
See test and release photos (8)
Alternatives with the same impeller (Ø190 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 | |
|---|---|---|---|---|---|---|---|
| LWBA2E190-072NS-01 this model | 483 m³/h | 357 Pa | 2,640 rpm | 56 W | 64.9 dB(A) | 230 V | |
| LWBA4E190-092NS-04 | 347 m³/h | 263 Pa | 2,100 rpm | 30 W | 58.2 dB(A) | 230 V | View |
| LWBA2E190-092NS-03 | 457 m³/h | 368 Pa | 2,700 rpm | 60 W | 65.2 dB(A) | 230 V | View |
| LWBA4E190-092NS-07 | 494 m³/h | 350 Pa | 2,500 rpm | 60 W | 65 dB(A) | 230 V | View |
| LWBA2E190-092NU-02 | 536 m³/h | 504 Pa | 3,080 rpm | 70 W | 68.5 dB(A) | 115 V | View |
| LWBA4E190-092NS-05 | 556 m³/h | 361 Pa | 2,500 rpm | 60 W | 65 dB(A) | 230 V | View |
| LWBA4E190-092NS-06 | 618 m³/h | 386 Pa | 2,700 rpm | 76 W | 68 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 LWBA2E190 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
LWFA4D200-102NT-01Ø200 mm · 1,236 m³/h · 226.6 Pa · ACadjacent size
LWBA2E180-092NS-02Ø180 mm · 494 m³/h · 371 Pa · ACadjacent size
LWFA4E180-092NS-01Ø180 mm · 773 m³/h · 195.7 Pa · ACadjacent size
LWBA2E180-092NS-03Ø180 mm · 443 m³/h · 335 Pa · ACadjacent size
LWFA4E200-102NS-02Ø200 mm · 1,236 m³/h · 226.6 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWFE3G140-072NS-01Ø140 mm · 484 m³/h · 216 Pa · ECsimilar duty
LWCD-60610MN-06Ø60 mm · 486 m³/h · 29 Pa · DCsimilar duty
LWFA2E146-092DS-07Ø146 mm · 479 m³/h · 391 Pa · ACsimilar duty
LWCA-50920SN-07Ø50 mm · 492 m³/h · 40 Pa · ACsimilar duty
LWBE3G133-072NS-06Ø133 mm · 473 m³/h · 609 Pa · ECsimilar duty
LWBE3G133-072PS-06Ø133 mm · 473 m³/h · 609 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for centrifugal fans — on our main site.
Solutions
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