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.
- ImpellerØ133 mm
- Max airflow721 m³/h
- Max static pressure515 Pa
- Voltage48 V
- Speed1,780 rpm
- Input power105 W
- Noise62 dB(A)
LWFD3G133-072DH-02 DC Dual Inlet Forward Centrifugal Blower Ø133 mm
Ø133 mm | DC | Max airflow 721 m³/h | Max static pressure 515 Pa | 62 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Need a non-standard size or another format? Ask an engineer or search the download center.
LWFD3G133-072DH-02 is a LONGWELL DC Dual Inlet Forward Centrifugal Blower from the Dual Inlet Forward Curved Blowers range, impeller Ø133 mm, rated 48 V DC, maximum airflow 721 m³/h, maximum static pressure 515 Pa, noise 62 dB(A), input power 105 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWFD3G133-072DH-02 |
|---|---|
| Series | LWFD3G133 |
| Motor type | DC |
| Rated voltage | 48 V |
| Current | 2.8 A |
| Input power | 105 W |
| Speed | 1,780 rpm |
| Max. airflow | 721 m³/h |
| Max. static pressure | 515 Pa |
| Noise | 62 dB(A) |
| Ambient temperature | -30 ~ 60 °C |
| Impeller diameter | Ø133 mm |
| Rotor diameter | 72 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
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 LWFD3G133: 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 (Ø133 mm · DC)
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 | |
|---|---|---|---|---|---|---|---|
| LWFD3G133-072DH-02 this model | 721 m³/h | 515 Pa | 1,780 rpm | 105 W | 62 dB(A) | 48 V | |
| LWFD3G133-072SZ-01 | 319 m³/h | 319 Pa | 2,100 rpm | 65 W | 59 dB(A) | 310 V | View |
| LWFD3G133-072SH-01 | 319 m³/h | 258 Pa | 2,040 rpm | 48 W | 63 dB(A) | 48 V | View |
| LWFD3G133-072SM-01 | 319 m³/h | 258 Pa | 2,040 rpm | 48 W | 63 dB(A) | 24 V | View |
| LWBD3G133-072NH-03 | 386 m³/h | 335 Pa | 3,900 rpm | 28 W | 65 dB(A) | 48 V | View |
| LWBD3G133-072NM-02 | 386 m³/h | 335 Pa | 3,900 rpm | 28 W | 65 dB(A) | 24 V | View |
| LWFD3G133-092DZ-02 | 679.8 m³/h | 329.6 Pa | 1,550 rpm | 80 W | 69 dB(A) | 310 V | View |
| LWFD3G133-092DZ-01 | 679.8 m³/h | 329.6 Pa | 1,550 rpm | 80 W | 69 dB(A) | 310 V | View |
| LWFD3G133-072DM-02 | 721 m³/h | 515 Pa | 1,780 rpm | 105 W | 62 dB(A) | 24 V | View |
| LWFD3G133-092DH-01 | 772.5 m³/h | 293.55 Pa | 1,750 rpm | 110 W | 66 dB(A) | 48 V | View |
| LWFD3G133-092DM-01 | 772.5 m³/h | 293.55 Pa | 1,750 rpm | 110 W | 66 dB(A) | 24 V | View |
| LWFD3G133-092DH-03 | 978.5 m³/h | 484.1 Pa | 1,560 rpm | 120 W | 68 dB(A) | 48 V | View |
| LWFD3G133-092DM-03 | 978.5 m³/h | 484.1 Pa | 1,560 rpm | 120 W | 68 dB(A) | 24 V | View |
| LWFD3G133-072DM-04 | 1,112.4 m³/h | 597.4 Pa | 1,580 rpm | 118 W | 64 dB(A) | 24 V | View |
| LWFD3G133-072DH-04 | 1,112.4 m³/h | 597.4 Pa | 1,580 rpm | 118 W | 64 dB(A) | 48 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 LWFD3G133 seriesSame impeller, different speed grade or wiring
LWFD3G133-092DM-01Ø133 mm · 772.5 m³/h · 293.55 Pa · DCsame series
LWFD3G133-092DH-01Ø133 mm · 772.5 m³/h · 293.55 Pa · DCsame series
LWFD3G133-072DM-02Ø133 mm · 721 m³/h · 515 Pa · DCsame series
LWFD3G133-092DM-03Ø133 mm · 978.5 m³/h · 484.1 Pa · DCsame series
LWFD3G133-092DH-03Ø133 mm · 978.5 m³/h · 484.1 Pa · DCsame series
LWFD3G133-072DM-04Ø133 mm · 1,112.4 m³/h · 597.4 Pa · DCsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWBE3G450-188NT-14Ø138 mm · 8,985 m³/h · 840 Pa · ECadjacent size
LWFD3G140-072SH-01Ø140 mm · 464 m³/h · 453 Pa · DCadjacent size
LWFE3G140-072SS-03Ø140 mm · 597 m³/h · 979 Pa · ECadjacent size
LWFD3G140-072SM-01Ø140 mm · 464 m³/h · 453 Pa · DCadjacent size
LWFE3G140-072SS-01Ø140 mm · 453 m³/h · 783 Pa · ECadjacent size
LWFE3G140-072SS-02Ø140 mm · 505 m³/h · 881 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See all Centrifugal Fans · select by duty point