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| Model | WDF4020 | Size | 40x40x20mm |
| Frame | Plastic Blade/Plastic Frame | Impeller | PBT+30%GF |
| Bearing Type | Sleeve Bearing | Lead Wire | UL Type |
| Motor | Copper Motor | Insulation | Impedance Protected Reverse Polarity Protected |
| Weight | 25g | Rated Voltage | 5v |
| Application | 3D printers,Stage lighting,VR equipment,Intelligent Manicure machine, Projector,High-speed camera,Head mounted display,Automotive industry, Cabinet industry, Power industry,UAV application, Electric forklift,LED lighting industry, Hand held air detector,Charging machine,Nebulizer.Electromagnetic oven,Humidifier,Smart toilet,Intelligent household lampblack machine,Air purifier,Car GPS,Car LED lamp,Aromatherapy machine.CPU cooler,Case. | ||

| Listed Model | Bearing System | Rated Voltage | Operation Voltage | Rated Current | Rated Speed | Air Flow | Air Pressure | Noise Level | Available Features(Optional) | Weight | |||
| VDC | VDC | A | RPM | CFM | mmH2O | dBA | Tachometer Output | Rotation Detector | Thermal Control | PulseWidth Modulation | G | ||
| WDF4020S | Sleeve | 5 | 3.5~6.0 | 0.20 | 6,000 | 4.10 | 8.50 | 34.8 | √ | √ | √ | 25 | |
| WDF4020S | Sleeve | 5 | 3.5~6.0 | 0.15 | 5,300 | 3.50 | 6.80 | 29.6 | √ | √ | √ | 25 | |
| WDF4020S | Sleeve | 5 | 3.5~6.0 | 0.10 | 4,200 | 2.90 | 4.90 | 25.5 | √ | √ | √ | 25 | |
| WDF4020S | Sleeve | 12 | 5.0~14.0 | 0.10 | 6,000 | 4.10 | 8.50 | 34.8 | √ | √ | √ | 25 | |
| WDF4020S | Sleeve | 12 | 5.0~14.0 | 0.06 | 5,300 | 3.50 | 6.80 | 29.6 | √ | √ | √ | 25 | |
| WDF4020S | Sleeve | 12 | 5.0~14.0 | 0.05 | 4,200 | 2.90 | 4.90 | 25.5 | √ | √ | √ | 25 | |








| Q:Are you a factory or trading company? |
| A:We are a factory. |
| Q:What is the products of our factory ? |
| A: The products are Dc cooling fans , Ac cooling fans, Blower cooling fans, Cpu cooling fan, VGA cooling fan.Our fans from 20mm-220mm . We can also do cooling fans as customers' requirement. |
| Q: Do you provide samples ? is it free or extra ? |
| A: Yes, we could offer the sample for free charge but do not pay the cost of freight. |
| Q: What is your terms of payment ? |
| A: It needs to be decided on the basis of the situation. |
| Q: How long is your delivery time? |
| A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity. |
| Other Dimension | |||||
| 20*20*6mm | 20*20*10mm | 25*25*7mm | 25*25*10mm | 35*35*10mm | 40*40*10mm |
| 40*40*10mm | 40*40*20mm | 40*40*28mm | 50*50*10mm | 50*50*15mm | 60*60*15mm |
| 60*60*20mm | 60*60*25mm | 70*70*25mm | 80*80*10mm | 80*80*15mm | 80*80*25mm |
| 90*90*25mm | 92*92*38mm | 120*120*25mm | 120*120*38mm | 135*135*38mm | 140*140*25mm |
| 140*140*38mm | 150*150*50mm | 172*150*38mm | 170*152*51.5mm | 180*180*60mm | 200*200*60mm |
| 220*220*60mm | 225*255*80mm | 280*280*80mm | |||

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