Ball bearing 40*40*20mm dc blower axial flow fan 5v 12v 24v

Product Description                                                       

1 Ball bearing 40*40*20mm dc blower axial flow fan 5v 12v 24v 

2.szie:40*40*20mm

3.sleeve/ball bearing 

4.good quality 

5.Rated voltage:5/12/24v

Packaging & Shipping                                             

Our Services                                                                  

1)We use the best plastic which has been certificated by UL. All plastic of our products is UL 94 V-0 

2) We have our factory. It can be sured the date of delivery and quality of products.

3)Our products can be used in many field 

4) Best quality in the field of DC or AC cooling fans

Company Information                                                   Shenzhen Son Times Electronics & Technology Co., was founded in Aug., 2003, which was located in Building 52, Xinxia industrial zone, Pinghu town, Longgang District in Shenzhen city. Our company is a high-tech company  which integrates R&D, design, production and marketing on the field of AC and DC fans. And our company is the first first manufacturer in the same trade that first produces both AC and DC fans. Many certificates have been certificated in our company, such as CE, RHOS,CCC and so on. Now our products are exported far to Europe, Middle East, Korea, Vietnamese, Japanese, Asia and our marketing networks have spread big cities home and overseas. 

 Welcome to Sontimes company!

FAQ                                                                              

1.  What is a DC Axial Fan?
An DC fan is usually powered by 3v, 5v, 12v, 24v, 36v and 48v. It blows air along the axis of the fan, or parallel to the track of the blade axis. Standard DC Axial fan sizes include 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 92mm,120mm, 150mm,  and 200mm.

2. How to choose a DC fan?
To choose a DC fan, you should consider the points below

a. fan voltage

b. fan current

c. fan rated speed

d. fan airflow

e. fan bearing style

3. What is a bearing?
Fan bearing includes Sleeve Bearing and Ball Bearing, life expectancy of sleeve bearing fan is 30000hours, while ball bearing is 50000hours or more.

4. How do we carry out quality control?
Usually, there are two ways to monitor reliability during the manufacturing process. 

a. Early Life Test

This is used as a mean of process control aimed at identifying any latent manufacturing problems and determining the effectiveness of burn-in. Every day, 5 samples will be picked up randomly from one of the production lines for burn in at 50°C+/-5°C for 24 hours.

b. On-going Reliability Demonstration

This is a longer-term program aimed at providing data on continuous basis to demonstrate the reliability of product. 10 units per month are randomly collected from one of the production lines for burn-in for 168 hours at 50°C+/-5°C. Units are monitored and tested on daily basis. Failed units will be analyzed and corrective actions taken where necessary.

5. What can I do if we can not find the suitable fan model in the fan list?
Please contact us for customized fans.

Please contact me if you are interested in our products  

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  http://scmdz.en.china.cn/