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How to choose a more reasonable DC axial fan?

How to choose a more reasonable DC axial fan?
When choosing a DC fan for the first time, because there is no concept about the air volume and noise of the DC axial fan, and the price of the DC axial fan may be unclear, so when choosing a DC axial fan, there is no way to start. If this is the case, it can be done easily in three steps
    Step 1: Choose a DC fan of the largest size that you think can be installed, determine the voltage, and ask the supplier of the DC axial fan to do a test to see the effect. If the sample is not too suitable, confirm the relevant parameters by the following method
    Because the fan speed is proportional to the voltage, increase the voltage by 20% or decrease by 50%. If you adjust to which voltage value, you can test the air volume and noise. Write down the voltage value at this time. The supplier designs a 12V fan according to the speed and air volume of this voltage
 
    Step 2: Redesign the DC axial fan according to the parameters confirmed by the customer. (Of course, if the first step cannot achieve the desired effect in any way, the fan size needs to be changed. At this time, you can discuss the new size with the fan supply and follow the first step)
 
    The third step: According to the product warranty time and the harsh environment, choose what kind of bearing to use, which directly affects the cost of the Dc axial fan. The life of oil-impregnated bearings is 20,000 hours under normal temperature and normal conditions, and the life of double ball bearings is 50,000 hours under normal temperature and normal conditions. In high temperature and dusty environments, the life of oil-impregnated bearings decreases faster than that of double ball bearings. Of course, the price Also cheaper
 
Ruiapple, a manufacturer of DC axial fans, has been developing in the industry for many years, and has formed a considerable enterprise scale and a business philosophy of product advantages. It has always won the market with good product performance-price ratio and high-quality service, and has won the trust of customers.
 
Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer with 20 years of R&D, production and sales experience. Main business: cooling fan, DC fan, AC fan, silent fan, centrifugal fan, blower and other full range of heat dissipation and ventilation products as an integrity enterprise, the series of cooling fan products have obtained UL, CUL, CE, CCC, ROHS, etc. International Certification.
 
Shenzhen Ruiapple Electronics Co., Ltd. was established in 2000. For 20 years, it has focused on R&D, manufacturing and sales of DC AXIAL FAN, AC AXIAL FAN, CENTRIFUGAL FAN, and blower ( BLOWER), AC to DC fan (EC FAN), DC motor (DC MOTOR), AC to DC (EC MOTOR) motor and other full series of cooling and ventilation products as a whole series of integrity enterprises.
 
Shenzhen Ruiapple Electronics Co., Ltd. has its own brand "RUIAPPLE", which is registered as a patent trademark by the government. The company passed the ISO9001-2015 system certification in the early years. The series of heat dissipation fan products have obtained UL, CUL, CE, CCC, ROHS and other international certifications.
 
Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer (manufacturing factory Mianyang anpu Electric Co., Ltd. was established in 2009 and China Electronic Technology City Mianyang Economic Development Zone, Sichuan), with 20 years of R&D, production and sales experience. Our R&D, quality control and production always pay close attention to new technologies and new methods to pursue the goal of zero defects, continuously improve product quality and stability, improve products, innovate products, and lean production. Our product quality and production technology have always been in the forefront of the industry, with complete product specifications and comprehensive market competitive advantages.
 
Shenzhen Ruiapple Electronics Co., Ltd. has a strong R&D team, which has been dedicated to product research and development for many years, providing customers with complete heat dissipation solutions, striving for perfection, improving processes, and optimizing performance. It is targeted at consumer goods, office equipment, aerospace industry, automotive electronics, Ventilation system, machinery equipment, communication equipment and other industries conduct special research and provide products for the industry characteristics of the application of heat dissipation and ventilation products.