Cooling Fans & Blowers
Browse by size
Browse by series
| Model | Size | Max airflowm³/h | Max static pressurePa | PowerW | NoisedB(A) | Speedrpm | VoltageV | ||
|---|---|---|---|---|---|---|---|---|---|
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LWAD12025LL-10DC | 120 mm | 210.6 | 150 | 7.2 | 52.8 | 3,500 | 12 | Details |
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LWAD12025LM-04DC | 120 mm | 142.2 | 47 | 12 | 39.7 | 2,500 | 12 | Details |
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LWAD12025LM-09DC | 120 mm | 241.2 | 196 | 12 | 55.7 | 4,000 | 12 | Details |
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LWAD12025LX-01DC | 120 mm | 255.6 | 151 | 24 | 52.5 | 4,500 | 12 | Details |
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LWAD12025LX-02DC | 120 mm | 227.4 | 119 | 24 | 49.9 | 4,000 | 12 | Details |
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LWAD12025LX-03DC | 120 mm | 198.6 | 91 | 24 | 47 | 3,500 | 12 | Details |
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LWAD12025LX-07DC | 120 mm | 301.2 | 249 | 24 | 60.5 | 5,000 | 12 | Details |
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LWAD12025MD-06DC | 120 mm | 85.2 | 17 | 4.8 | 28.6 | 1,500 | 24 | Details |
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LWAD12025MH-03DC | 120 mm | 170.4 | 67 | 19.2 | 43.7 | 3,000 | 24 | Details |
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LWAD12025MH-08DC | 120 mm | 271.2 | 249 | 19.2 | 58.2 | 4,500 | 24 | Details |
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LWAD12025ML-05DC | 120 mm | 113.4 | 30 | 12 | 34.8 | 2,000 | 24 | Details |
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LWAD12025ML-10DC | 120 mm | 210.6 | 150 | 12 | 52.8 | 3,500 | 24 | Details |
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LWAD12025MM-04DC | 120 mm | 142.2 | 47 | 14.4 | 39.7 | 2,500 | 24 | Details |
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LWAD12025MM-09DC | 120 mm | 241.2 | 196 | 14.4 | 55.7 | 4,000 | 24 | Details |
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LWAD12025MX-01DC | 120 mm | 255.6 | 151 | 24 | 52.5 | 4,500 | 24 | Details |
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LWAD12025MX-02DC | 120 mm | 227.4 | 119 | 24 | 49.9 | 4,000 | 24 | Details |
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LWAD12025MX-03DC | 120 mm | 198.6 | 91 | 24 | 47 | 3,500 | 24 | Details |
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LWAD12025MX-07DC | 120 mm | 301.2 | 249 | 24 | 60.5 | 5,000 | 24 | Details |
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LWAD12038HD-08DC | 120 mm | 238.2 | 127 | 9.6 | 55.2 | 4,000 | 48 | Details |
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LWAD12038HD-16DC | 120 mm | 170.4 | 78 | 7.2 | 44.5 | 2,500 | 48 | Details |
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LWAD12038HH-02DC | 120 mm | 331.8 | 181 | 24 | 55.7 | 4,200 | 48 | Details |
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LWAD12038HH-05DC | 120 mm | 327.6 | 240 | 28.8 | 62.1 | 5,500 | 48 | Details |
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LWAD12038HH-13DC | 120 mm | 272.4 | 199 | 16.8 | 54.7 | 4,000 | 48 | Details |
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LWAD12038HL-07DC | 120 mm | 268.2 | 161 | 14.4 | 57.8 | 4,500 | 48 | Details |
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LWAD12038HL-15DC | 120 mm | 204.6 | 112 | 9.6 | 48.5 | 3,000 | 48 | Details |
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LWAD12038HM-03DC | 120 mm | 284.4 | 133 | 16.8 | 52.4 | 3,600 | 48 | Details |
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LWAD12038HM-06DC | 120 mm | 297.6 | 199 | 24 | 60 | 5,000 | 48 | Details |
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LWAD12038HM-14DC | 120 mm | 238.2 | 152 | 12 | 51.8 | 3,500 | 48 | Details |
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LWAD12038HX-01DC | 120 mm | 361.2 | 210 | 57.6 | 58.5 | 4,600 | 48 | Details |
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LWAD12038HX-04DC | 120 mm | 357.6 | 286 | 38.4 | 64 | 6,000 | 48 | Details |
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LWAD12038HX-09DC | 120 mm | 408.6 | 448 | 57.6 | 63.5 | 6,000 | 48 | Details |
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LWAD12038HX-10DC | 120 mm | 374.4 | 376 | 57.6 | 61.6 | 5,500 | 48 | Details |
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LWAD12038HX-11DC | 120 mm | 340.8 | 311 | 57.6 | 59.5 | 5,000 | 48 | Details |
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LWAD12038HX-12DC | 120 mm | 306.6 | 252 | 57.6 | 57.3 | 4,500 | 48 | Details |
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LWAD12038LD-08DC | 120 mm | 238.2 | 127 | 9.6 | 55.2 | 4,000 | 12 | Details |
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LWAD12038LD-16DC | 120 mm | 170.4 | 78 | 6 | 44.5 | 2,500 | 12 | Details |
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LWAD12038LH-02DC | 120 mm | 331.8 | 181 | 18 | 55.7 | 4,200 | 12 | Details |
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LWAD12038LH-05DC | 120 mm | 327.6 | 240 | 18 | 62.1 | 5,500 | 12 | Details |
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LWAD12038LH-13DC | 120 mm | 272.4 | 199 | 18 | 54.7 | 4,000 | 12 | Details |
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LWAD12038LL-07DC | 120 mm | 268.2 | 161 | 12 | 57.8 | 4,500 | 12 | Details |
Cooling Fans & Blowers — selection guide
The Cooling Fans & Blowers category currently lists 879 models, frame sizes 24–254 mm, maximum airflow 2–4,800 m³/h, static pressure up to 2,650 Pa, on DC / AC / EC motors, across 54 series. 157 models carry a measured P-Q curve for duty-point selection and 864 a dimensional drawing. Common voltages: 12 V, 24 V, 48 V, 5 V, 100-240 V.
Compact cooling fans and blowers keep electronics, power supplies, cabinets, chargers and battery packs within temperature limits. Frame sizes run from 25 to 200 mm for axial fans and Ø40–120 mm for DC centrifugal blowers, on 5 / 12 / 24 / 48 V DC, EC or AC platforms, with ball bearings for long life and options for PWM control, tacho signal and IP protection.
How to select a Cooling Fans & Blower
- Calculate the airflow from the heat load: Q (m³/h) ≈ 3 × heat (W) / ΔT (K) for air, then add resistance for filters and grilles.
- Pick the largest frame size that fits: a larger, slower fan moves the same air at much lower noise and higher service life.
- Use DC blowers where the air has to be pushed through a narrow channel or heatsink with high resistance; axial fans for open cabinets and panels.
- Specify the control interface — PWM, tacho, 0–10 V or alarm output — at the outset; it defines the motor electronics.
- Check service life at the real ambient temperature: L10 life halves for roughly every 10 K above the rated temperature.
Typical applications
- Power supplies and inverters
- Telecom and server cabinets
- EV chargers and battery packs
- Medical and laboratory devices
- Displays, projectors and appliances
Why specify LONGWELL cooling fans & blowers
Every model here is a current production item with structured data — not a catalogue scan. Curves are tested on our own wind-tunnel rigs per AMCA 210 / ISO 5801 methods, drawings and datasheets download directly, CAD is released on request, and a quotation with the duty-point check comes back within one business day. Samples ship in 1–3 days and production batches in 15–30 days from the factory in Ningbo, with ISO 9001 / 14001 / 45001 management systems and ETL, CE and RoHS documentation per product line.
FAQs — Cooling Fans & Blowers
How do I calculate the cooling fan airflow I need?
A practical estimate for air cooling is Q (m³/h) ≈ 3 × P (W) / ΔT (K), where P is the heat to remove and ΔT the allowed air temperature rise. Then add the resistance of filters, grilles and heatsinks and choose a fan whose curve covers that point.
Which frame sizes are available?
Axial cooling fans from 25 × 25 mm up to 200 mm, DC centrifugal blowers Ø40–120 mm and EC cooling fans Ø60–254 mm. Use the size buckets in this category to browse by frame size.
Are PWM control and tacho output available?
Yes. Most DC models can be supplied with PWM speed control, tacho (FG) signal or alarm (RD) output; EC models add 0–10 V control and fault feedback. The option is part of the model code — ask if the variant you need is not listed.
What is the service life of your cooling fans?
Ball-bearing models are rated 30,000–40,000 hours L10 at 40 °C depending on the series; the value is shown in the technical data of each model. Life shortens with temperature and dust load.
Do you support UL / CE requirements for equipment approval?
Fans are built with UL94 V-0 materials and CE / RoHS documentation; ETL-listed families are marked on the certifications page. Declarations for a specific model are issued on request.