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.
- ImpellerØ120 mm4.7 in
- Max airflow371 m³/h218 CFM
- Max static pressure309 Pa1.24 in. wg
- Voltage48 V
- Speed2,400 rpm
- Input power95 W
- Noise60 dB(A)
LWFD3G120-072SH-02 DC Single Inlet Forward Centrifugal Blower Ø120 mm
Ø120 mm | DC | Max airflow 371 m³/h | Max static pressure 309 Pa | 60 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.
LWFD3G120-072SH-02 is a LONGWELL DC Single Inlet Forward Centrifugal Blower from the Single Inlet Forward Curved Blowers range, impeller Ø120 mm, rated 48 V DC, maximum airflow 371 m³/h, maximum static pressure 309 Pa, noise 60 dB(A), input power 95 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWFD3G120-072SH-02 |
|---|---|
| Series | LWFD3G120 |
| Motor type | DC |
| Rated voltage | 48 V |
| Current | 1.98 A |
| Input power | 95 W |
| Speed | 2,400 rpm |
| Max. airflow | 371 m³/h |
| Max. airflow (CFM) | 218 CFM |
| Max. static pressure | 309 Pa |
| Noise | 60 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -25 ~ 60℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø120 mm |
| Rotor diameter | 72 |
| Impeller material | Galvanised Sheet( 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 25 °Croom, humidity 15%~65%RH |
| Speed control | Control input 0~10VDC/PWM |
| Control signal | Control signal VSP voltage range1VDC~10VDC(During normal operation, when the VSP voltage is below 1.2VDC, the motor switches from operating mode to standby mode) |
| PWM input | PWM signal: frequency 1K–10KHz, amplitude 10V,duty cycle 10%–100% . |
| Speed feedback | Tach output: 2 Pulse/R; FG internal open circuit output, external pull-up resistor R, pull-up voltage V+ |
| Protection functions | Polarity Protection |
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 LWFD3G120: 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 (Ø120 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 | |
|---|---|---|---|---|---|---|---|
| LWFD3G120-072SH-02 this model | 371 m³/h | 309 Pa | 2,400 rpm | 95 W | 60 dB(A) | 48 V | |
| LWFD3G120-072SZ-02 | 319 m³/h | 247 Pa | 2,200 rpm | 65 W | 57 dB(A) | 310 V | View |
| LWFD3G120-072SZ-01 | 319 m³/h | 247 Pa | 2,200 rpm | 65 W | 57 dB(A) | 310 V | View |
| LWFD3G120-072SH-01 | 359 m³/h | 189 Pa | 2,365 rpm | 67 W | — | 48 V | View |
| LWFD3G120-072SH-03 | 371 m³/h | 309 Pa | 2,400 rpm | 95 W | 60 dB(A) | 48 V | View |
| LWFD3G120-072SM-02 | 371 m³/h | 309 Pa | 2,400 rpm | 95 W | 60 dB(A) | 24 V | View |
| LWFD3G120-072SM-01 | 371 m³/h | 309 Pa | 2,400 rpm | 95 W | 60 dB(A) | 24 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 LWFD3G120 seriesSame impeller, different speed grade or wiring
LWFD3G120-072SH-01Ø120 mm · 359 m³/h · 189 Pa · DCsame series
LWFD3G120-072SM-01Ø120 mm · 371 m³/h · 309 Pa · DCsame series
LWFD3G120-072SM-02Ø120 mm · 371 m³/h · 309 Pa · DCsame series
LWFD3G120-072SH-03Ø120 mm · 371 m³/h · 309 Pa · DCsame series
LWFD3G120-072SZ-01Ø120 mm · 319 m³/h · 247 Pa · DCsame series
LWFD3G120-072SZ-02Ø120 mm · 319 m³/h · 247 Pa · DCsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWFE3G108-072NS-01Ø108 mm · 330 m³/h · 330 Pa · ECadjacent size
LWFA2E108-072NS-01Ø108 mm · 155 m³/h · 185.4 Pa · ACadjacent size
LWFD3G133-072SM-01Ø133 mm · 319 m³/h · 258 Pa · DCadjacent size
LWFD3G133-072SH-01Ø133 mm · 319 m³/h · 258 Pa · DCadjacent size
LWFD3G133-072SZ-01Ø133 mm · 319 m³/h · 319 Pa · DCadjacent size
LWFD3G133-092DZ-02Ø133 mm · 679.8 m³/h · 329.6 Pa · DCadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See all Centrifugal Fans · select by duty point