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 airflow567 m³/h334 CFM
Max static pressure433 Pa1.74 in. wg
Voltage230 V
Speed1,250 rpm
Input power190 W
Noise69 dB(A)

LWFA4E133-092DS-04 AC Dual Inlet Forward Centrifugal Blower Ø133 mm

Ø133 mm | AC | Max airflow 567 m³/h | Max static pressure 433 Pa | 69 dB(A)

SKU: LWFA4E133-092DS-04 Categories: Centrifugal Fans, Dual Inlet Forward Curved Blowers, Impeller Ø120–146 mm

Direct from LONGWELL
OEM / ODM
Samples in 1–3 days
Production 15–30 days
12-month warranty
CE · RoHS · ETL on request

PDFDatasheet (PDF)electrical & performance dataPDFFull product catalogueAC AC Dual Inlet Forward Centrifugal Blower · SKU on PDF p. 7

All files for LWFA4E133-092DS-046 files · direct download

PDFFull product catalogue · model on PDF p. 7 WEBPDimensional drawing WEBPPerformance curve WEBPWiring diagram PDFDrawing

CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center

Used in

Range hoods Air heaters Fan coil units Appliances All industries →

Proven in projects

AHU & ventilation unit fans CRAH FanGrid retrofit Heat pump fan programme All case studies →

Get a quote · LWFA4E133-092DS-04

Price, curve check and lead time within 1 business day.

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Files for LWFA4E133-092DS-04datasheet · catalogue · drawings · curves — listed above

Samples 1–3 days · fee credited to your order
Typically 50–200 pcs · ~30 pcs for a first validation order
T/T 30 / 70 · FOB / CIF / DDP
Released to LONGWELL standards · 12-month warranty
How ordering works →

Performance curve (P-Q) LWFA4E133-092DS-04

Required airflow Required static pressure

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.

Drawing, Curve & Wiring LWFA4E133-092DS-04

LWFA4E133-092DS-04 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWFA4E133-092DS-04 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWFA4E133-092DS-04 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Files for LWFA4E133-092DS-04: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.

Technical description LWFA4E133-092DS-04

LWFA4E133-092DS-04 is a LONGWELL AC Dual Inlet Forward Centrifugal Blower from the Dual Inlet Forward Curved Blowers range, impeller Ø133 mm, rated 230 V AC, maximum airflow 567 m³/h, maximum static pressure 433 Pa, noise 69 dB(A), input power 190 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.

Technical data

Model	LWFA4E133-092DS-04
Series	LWFA4E133
Motor type	AC
Phase	1-phase
Rated voltage	230 V
Voltage range	198-242
Frequency	60 Hz
Current	0.86 A
Input power	190 W
Speed	1,250 rpm
Max. airflow	567 m³/h
Max. static pressure	433 Pa
Noise	69 dB(A)
Ambient temperature	-30 ~ 60 °C
Storage temperature	-30 ~ 70℃
Humidity	0 ~ 85 % RH
Altitude	< 1000m
Impeller diameter	Ø133 mm
Rotor diameter	92 mm
Impeller material	Galvanised sheet steel ( 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 20 °Croom, humidity 15%~65%RH

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 LWFA4E133: 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).

ISO 9001 / 14001 / 45001 management system certificate — LONGWELL certificate

PDFISO 9001 / 14001 / 45001 management system certificate

Need a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.

How to order LWFA4E133-092DS-04

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.

See terms, QC and FAQ →

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)

LONGWELL Semi-anechoic chamber — Semi-anechoic chamber

LONGWELL Test laboratory — Test laboratory

Test labs and all certificate scans →

Alternatives with the same impeller (Ø133 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
LWFA4E133-092DS-04 this model	567 m³/h	433 Pa	1,250 rpm	190 W	69 dB(A)	230 V
LWBA2E133-072NS-02	225 m³/h	184 Pa	2,720 rpm	27.8 W	57.9 dB(A)	230 V	View
LWBA2E133-072NS-01	245 m³/h	242 Pa	3,070 rpm	32.2 W	58.7 dB(A)	230 V	View
LWFA2E133-092NS-02	278 m³/h	464 Pa	2,350 rpm	95 W	63 dB(A)	230 V	View
LWFA2E133-092SS-02	278 m³/h	464 Pa	1,750 rpm	95 W	63 dB(A)	230 V	View
LWFA2E133-092NS-01	299 m³/h	361 Pa	2,300 rpm	83 W	61 dB(A)	230 V	View
LWFA2E133-092SS-01	299 m³/h	361 Pa	1,850 rpm	83 W	61 dB(A)	230 V	View
LWFA2E133-092SS-03	319 m³/h	433 Pa	1,600 rpm	85 W	56 dB(A)	230 V	View
LWFA2E133-092DS-07	330 m³/h	309 Pa	1,450 rpm	70 W	40 dB(A)	230 V	View
LWFA4E133-092DS-09	556.2 m³/h	144.2 Pa	1,150 rpm	75 W	51 dB(A)	230 V	View
LWFA4E133-092DS-03	649 m³/h	371 Pa	1,400 rpm	180 W	69 dB(A)	230 V	View
LWFA2E133-092DS-08	726.15 m³/h	381.1 Pa	1,500 rpm	190 W	60 dB(A)	230 V	View
LWFA2E133-092DS-10	773 m³/h	433 Pa	1,200 rpm	250 W	58 dB(A)	230 V	View
LWFA2E133-092DS-06	886 m³/h	639 Pa	1,300 rpm	265 W	69 dB(A)	230 V	View
LWFA2E133-092DS-05	927 m³/h	494 Pa	1,350 rpm	250 W	69 dB(A)	230 V	View