ImpellerØ140 mm5.5 in
Max airflow597 m³/h351 CFM
Max static pressure979 Pa3.93 in. wg
Voltage230 V
Speed2,130 rpm
Input power110 W
Noise65 dB(A)

LWFE3G140-072SS-04 EC Single Inlet Forward Centrifugal Blower Ø140 mm

Ø140 mm | EC | Max airflow 597 m³/h | Max static pressure 979 Pa | 65 dB(A)

SKU: LWFE3G140-072SS-04 Categories: Centrifugal Fans, Impeller Ø140–153 mm, Single Inlet Forward Curved Blowers

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18-month warranty
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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. 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.

LWFE3G140-072SS-04 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWFE3G140-072SS-04 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWFE3G140-072SS-04 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWFE3G140-072SS-04

PDFDatasheet · 568 KB

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LWFE3G140-072SS-04 is a LONGWELL EC Single Inlet Forward Centrifugal Blower from the Single Inlet Forward Curved Blowers range, impeller Ø140 mm, rated 230 V EC, maximum airflow 597 m³/h, maximum static pressure 979 Pa, noise 65 dB(A), input power 110 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	LWFE3G140-072SS-04
Series	LWFE3G140
Motor type	EC
Phase	1-phase
Rated voltage	230 V
Frequency	50 Hz
Current	0.8 A
Input power	110 W
Speed	2,130 rpm
Max. airflow	597 m³/h
Max. airflow (CFM)	351 CFM
Max. static pressure	979 Pa
Noise	65 dB(A)
Ambient temperature	-30 ~ 60 °C
Storage temperature	-30 ~ 70℃
Humidity	0 ~ 85 % RH
Altitude	< 1000m
Impeller diameter	Ø140 mm
Rotor diameter	72
Impeller material	PA6+GF ( 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

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 LWFE3G140: 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 (Ø140 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
LWFE3G140-072SS-04 this model	597 m³/h	979 Pa	2,130 rpm	110 W	65 dB(A)	230 V
LWFE3G140-072SS-01	453 m³/h	783 Pa	1,860 rpm	85 W	72 dB(A)	230 V	View
LWFE3G140-072NS-01	484 m³/h	216 Pa	1,910 rpm	70 W	72 dB(A)	230 V	View
LWFE3G140-072NS-02	494 m³/h	845 Pa	2,060 rpm	115 W	74 dB(A)	230 V	View
LWFE3G140-072SS-02	505 m³/h	881 Pa	1,900 rpm	85 W	61 dB(A)	230 V	View
LWFE3G140-072SS-03	597 m³/h	979 Pa	2,030 rpm	110 W	65 dB(A)	230 V	View