Ultra quiet high speed dc cpu fan with size 4cm 4010 4015 4020 5v dc mini cooling CPU fan for laptop computer server
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- Supplier: Zhengzhou Qifang Electric Co. Ltd.
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Product Overview
Description
Ultra quiet high speed dc cpu fan with size 4cm 4010 4015 4020 5v dc mini cooling CPU fan for laptop computer server
Product Description
specification 4cm 4010 4015 4020 5v dc mini cooling fan 40x40x20
| Model | Rated voltage VDC | Operating Voltage VDC | Current Amp | Rated input power Watts | Speed RPM | Max. air flow CFM | Max. Pressure mmH2O | Noise level DB-A | Weight G |
| qf4010HS/B1 | 5/12/24 | 3.5-27.6 | 0.04-0.20 | 0.7-1.0 | 6000-10000 | 5.7-10.3 | 0.16-0.27 | 22-35 | 16 |
| QF4020HSB2 | 5/12/24 | 3.5-27.6 | 0.04-0.20 | 0.7-1.0 | 6000-10000 | 5.7-10.3 | 0.16-0.27 | 22-35 | 24 |
| QF4028HS/B5 | 5/12/24 | 3.5-27.6 | 0.04-0.20 | 0.7-1.0 | 6000-10000 | 5.7-10.3 | 0.16-0.27 | 22-35 | 32 |
| Here we have our own moudling workshop, so any cooling fan size will be ok in our factory. thanks. | |||||||||
| Product image of 4cm 4010 4015 4020 5v dc mini cooling fan 40x40x20 |
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| 1 | construction of cooling fan in QFDJ | |
| Casting | plastic or aluminum alloy | |
| casting size | 40mm*40mm*28mm | |
| Impeller | plastic 94-V0-(ROHS, High temperature resistance, flame retardant ...) | |
| impeller No. | 7 | |
| bearing | sleeve/ball/dual ballbearing | |
| lead wire | UL 1007,AWG20 (2-PIN,3-PIN,4 PIN) connector is for your option | |
| 2 | Technical data of dc motor cooling fan | |
| rated voltage-VDC | 5V,12V,24V,38V | |
| Operating voltage-VDC | 7.0-13.8V,14.0-27.6V,28V-56V | |
| Current amp | 0.30 | |
| speed RPM | 3000/4000 | |
| AIR flow mmH2O | 45/60 | |
| 3 | Special data on motor cooling fan, please contact us directly, we have our own R&D team, and also we have our moudling workshop, so OEM is welcome in QFDJ. | |
| 4 | Motor cooling fan in QFDJ factory | |
| AC motor cooling fan size from 30mm to 300mm |  | |
| DC motor cooling fan size from 25mm to 400mm |  | |
| dc small motor blower fan |  | |
| metal blower fan |  | |
| 5 | application of 4cm 4010 4015 4020 5v dc mini cooling fan 40x40x20 | |
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Company Information
QFDJ locates in Zhengzhou city, Henan Province in 1992. With devolting herslef on indutrial motor cooling fan research, development, production for 25 years,now QFDJ has been one of the professional and experienced manufacturers and designers of AC/DC cooling fans in China.
Production Capacity:DC/AC cooling fan 10,000-12,000 pieces per day;
Blower fan 5,500-7,000 pieces per day;
QFDJ family and workshop:. 12 professional engineers and 2 study labs,8 sets automatic production lines,26 advanced researching&testing equipments;
Be popular with two registered trademark “QF” and ”QFDJ” across the world.
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| Dear customer, it is so glad to meet you here. we are a 25 years motor cooling fan factory, no matter the cooling fan price but the fan performance you can have a pleasant experience with us. 2% discount you can get from other cooling fan factory |
| besides the motor cooling fan popular size in market, our factory can do the special design for we have our own moudling workshop. |
Our Services
1.Reliable quality as well as good service after sale
2..24 hours on line service, and your any message will be answered in two hours
3.Sample lead time:3-5 days
4.Delivery lead time:2 weeks
5. OEM is welcome
FAQ
Q1:Are you a factory or trading company?
A1:We are a factory.Our factory is located in Zhengzhou city, Henan Province, China, about half an hour car ride from Zhengzhou Airport .All our clients are warmly welcome to visit us!
Q2:What are the products of our factory ?
A2: The products are Dc cooling fans , Ac cooling fans, Blower cooling fans, Cpu cooling fan, VGA cooling fan.Our fans from 40mm-220mm . We can also do cooling fans as customers' requirement.We are honored to offer you samples.
Q3:What characteristics determine the lifetime of the fan?
A3:In a well designed fan, the lifetime of the ball bearing is the limiting factor in the lifetime of the fan. Bearing life is related to the size of the bearing, the speed of the fan, the load of the fan, the grease used, and other factors.
Q4:What is the relationship between RPM and airflow?
A4:RPM and airflow are directly proportional. In other words, increasing RPM by 20% also increases airflow by 20%.
Q5:What is the relationship between airflow and voltage?
A5:Within normal operating range fan speed will increase with increasing supply voltage. Airflow will increase as a direct function of fan speed.
Q6:What can we do to lower the noise level in a fan?
A6:1) Lower the RPM or the fan operating speed (this also lowers airflow.)
2) Check for obstacles in front of and behind the fan. If they exist, move the fan farther away. In general, obstacles on the intake side of the fan negatively impact the noise level more than on the exhaust side.
Q7:How does your factory do regarding quality control?
A7:"Quality is priority. Quality control people always attach great importance to quality controlling from the very beginning to the very end. Our factory has gained CE, RoSH, CCCcertification.
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