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

*fan voltage

*fan current

*fan speed

*fan airflow

*fan noise

*fan lifespan

 

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 55000hours or more.

 

4. How do we carry out quality control?

Usually, there are two ways to monitor reliability during the manufacturing process.

* 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.

*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 is the divery time 

Sample lead time:3-5 days

Mass production Delivery lead time: 1 -3 weeks(Depend on the quantity)

Delivery Ways: DHL ,UPS Door to Door service ,By Air ,By Sea ,etc.

 

6. What can I do if we can not find the suitable fan model in the fan list?

Please contact us for customized fans.

* If you want another rpm or voltage or other reqirement,pls contact me for more details,thanks!

* For Special Cooling Fan,Such as: moistureproof, waterprrof, turbocharger, soft start, Reversible, temperature control, PWM speed control, the RD alarm and the FG signal etc,pls contact me freely.

Shipping:
1. We can shipping all over the world by DHL , UPS , FedEx and EMS . The packaging is very safe and strong. If you have any special needs please notify me.
2. It will take around 3-5 days to reach your hands .

 

Product Type & Condition :
1. Because of the fluctuant sales situation. the stock parts are always changing and the stock list cannot be promptly updated . So,please consult the stock situation when you inquire.

 

Warranty & Guarantee :
All components we sell the quality with 30 days Return policy from the day of shipment.

 

Buyer Reading:
1. Please confirm receipt of products if the items you received , and if the goods was damaged please contact us immediately. send the photo to us that we can check and give you best solution.
2. We only guarantee Delivery in time but we couldn't control the express delivery time. Our related sales person will be responsible to send the AWB for the delivered goods in the next workday. you can check the AWB in the website which we send to you. For the AWB you also can call to the local branch of the express company in your company.