The YWF Series External Rotor Fan is a new product developed by our company through repeated research and trial production. Compared with conventional axial flow fans, this fan features higher efficiency, lower noise, minimal vibration, compact structure, and aesthetically pleasing appearance. The impeller is directly mounted on the outer circumference of the external rotor, resulting in shorter axial dimensions. Its successful development represents a major breakthrough in the field of axial flow fans. This series has obtained multiple national patents.
This fan series features higher efficiency, fully enclosed design, low noise, minimal vibration, short axial dimensions, and maintenance-free operation, thus offering more extensive applicable occasions. It can replace conventional axial flow fans and is also suitable for severe oil, smoke, and dust environments such as kitchens, bathrooms, and industrial/mining enterprises.
The motor's standard operating environment temperature ranges from -30°C to 60°C at altitudes below 1000 meters.
| Core Technical Parameters | |||||||
| model | Voltage (V) |
Frequency (Hz) |
Power (W) |
Rotation speed (r/min) |
Air flow (m³/h) |
Static pressure (Pa) |
Noise Level dB(A) |
| YWF 2-200 | 220/380 | 50 | 80 | 2600 | 1080 | 120 | 55 |
| YWF 4-200 | 220/380 | 50 | 55 | 1400 | 780 | 60 | 50 |
| YWF 2-250 | 220/380 | 50 | 120 | 2600 | 1850 | 190 | 65 |
| YWF 4-250 | 220/380 | 50 | 60 | 1400 | 1250 | 60 | 55 |
| YWF 2-300 | 220/380 | 50 | 180 | 2600 | 3250 | 210 | 66 |
| YWF 4-300 | 220/380 | 50 | 80 | 1400 | 1950 | 70 | 60 |
| YWF 2-350 | 220/380 | 50 | 420 | 2600 | 4850 | 225 | 73 |
| YWF 4-350 | 220/380 | 50 | 130 | 1400 | 3270 | 93 | 64 |
| YWF 2-400 | 220/380 | 50 | 580 | 2600 | 6480 | 240 | 74 |
| YWF 4-400 | 220/380 | 50 | 190 | 1400 | 4800 | 125 | 68 |
| YWF 4-450 | 220/380 | 50 | 280 | 1400 | 5410 | 150 | 70 |
| YWF 4-500 | 220/380 | 50 | 370 | 1400 | 8850 | 190 | 72 |
| YWF 4-550 | 220/380 | 50 | 550 | 1400 | 10800 | 215 | 74 |
| YWF 4-600 | 220/380 | 50 | 750 | 1400 | 13000 | 230 | 75 |
| model | L （мм） |
L1 （мм） |
H （мм） |
h （мм） |
4-Φn （мм） |
Single mesh cover
(mm) |
Double mesh cover
(mm) |
|||||||
| ΦD | Φd | W | A | B | ΦD | Φd | W | B | ||||||
| Φ200 | 270 | 220 | 270 | 220 | 4-Φ13 | 220 | 200 | 90 | 54 | 12 | 220 | 200 | 90 | 12 |
| Φ250 | 320 | 270 | 320 | 270 | 4-Φ13 | 370 | 250 | 76 | 54 | 12 | 370 | 250 | 100 | 12 |
| Φ300 | 370 | 340 | 370 | 340 | 4-Φ13 | 325 | 300 | 91 | 54 | 12 | 325 | 300 | 106 | 12 |
| Φ350 | 420 | 370 | 420 | 370 | 4-Φ13 | 375 | 350 | 121.5 | 47 | 12 | 375 | 350 | 136.5 | 12 |
| Φ400 | 470 | 420 | 470 | 420 | 4-Φ13 | 425 | 400 | 130 | 47 | 12 | 425 | 400 | 140.5 | 12 |
| Φ450 | 520 | 470 | 520 | 470 | 4-Φ13 | 475 | 450 | 143 | 47 | 12 | 475 | 450 | 152.5 | 12 |
| Φ500 | 570 | 520 | 570 | 520 | 4-Φ13 | 525 | 500 | 141 | 50 | 12 | 525 | 500 | 153 | 12 |
| Φ550 | 620 | 570 | 620 | 570 | 4-Φ13 | 575 | 550 | 154 | 50 | 12 | 575 | 550 | 167 | 12 |
| Φ600 | 670 | / | 670 | / | 4-Φ13 | 620 | 600 | 171 | 50 | / | 625 | 600 | 185 | / |
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