Normal Plastic Shaft Base
DON'T BLOCK AIR CIRCULATION IN YOUR SYSTEM!
Experience Meets Innovation: Your Trusted DC Blower Fan Manufacturer
Maximize Your Product Air Circulation Efficiency with CCHV DC Blower Fans!
Stay Ahead with Our Innovative
DC Blower Fan Designs
CCHV designs and manufactures a wide range of DC blower fans, offering sizes from 20mm to 120mm and voltages of 3V, 5V, 12V, 24V and other custom voltages. Our DC blowers, featuring hydraulic & ball bearings and IP55 ratings, are customizable for various industrial needs, backed by a in-house and experienced R&D team. Choose us for the perfect blend of high performance, energy efficiency and cost effective!
Voltages
5V, 9V, 12V, 24V, 48V
or other voltages required
Size Range
20mm-250mm
Bearing Types
Hydraulic & Dual Ball
IP Grade
IP21-IP55
Normal DC Blower
20x20x6mm, 30x30x10mm, 40x40x10mm, 40x40x15mm, 45x45x10mm, 50x50x15mm, 50x50x25mm, 53x53x9mm, 60x60x23mm, 60x60x25mm, 60x60x28mm, 70x70x28mm, 75x75x30mm, 75x75x50mm, 90x90x15mm, 97x97x33mm, 100x100x26mm, 120x120x32mm
50X50X10mm
Max. Speed: 6200RPM
Max. Air Flow:
3.89 CFM
Max. Air Pressure: 20.13 mmAQ
50X50X15mm
Series B
Series B
Max. Speed:
6700RPM
Max. Air Flow:
5.13 CFM
Max. Air Pressure:
28.40 mmAQ
75X75X30mm
Series D
Series D
Max. Speed:
5300RPM
Max. Air Flow:
18.47 CFM
Max. Air Pressure:
30.53 mmAQ
97X97X33mm
Series B
Series B
Max. Speed:
6400RPM (24V)
Max. Air Flow:
47.12 CFM
Max. Air Pressure:
94.88 mmAQ
Ø100X25mm
DC Centrigual Fan
DC Centrigual Fan
Max. Speed: 4300RPM
Max. Air Flow:
39.70 CFM
Max. Air Pressure: 15.70 mmAQ
60X60X25mm
Series H
Series H
Max. Speed:
12000RPM
Max. Air Flow:
22.46 CFM
Max. Air Pressure:
145.94 mmAQ
70X70X28mm
Series B
Series B
Max. Speed:
9000RPM
Max. Air Flow:
29.97 CFM
Max. Air Pressure:
109.74 mmAQ
75X75X30mm
Series G
Series G
Max. Speed:
8200RPM (24V)
Max. Air Flow:
34.28 CFM
Max. Air Pressure:
107.16 mmAQ
Be carefully when you choose a new fan supplier. The DISAPPOINTMENT of low quality lasts much longer than the Sweetness of LOW PRICE!
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Bearing Systems
Bearing system is the “heart” of DC Blower fans, which, to a large extent, determines the fan lifespan. There are mainly two types of bearings at CCHV. The following descriptions and comparisons can help you to get your right bearing system for your applications.
Hydraulic/Rifle Bearing
Hydraulic/Rifle bearing is upgraded common sleeve bearing, which gets loop-back grooves for lubricating oil to solve the leakage problem. Both of hydraulic and sleeve bearing are sintered body made of copper and iron powder through metallurgy.
- Fan Lifespan: 30,000 Hours Under 40℃ & 65%RH
- Fan Mouting: Impeller Upward Installed Horizontally, Impeller Vertical Installation and Angle Against Vertical Plane keeps from -5 ° to 5 °. Impeller downward to the ground is NOT Acceptable
- Fan Noise: Lower Noise at Low Speed
- Operating Temperature: Not Good Choice when temperature exceeds than 60℃
- Cost: Low
Dual Ball Bearing
Ball bearing is a kind of rolling bearing, the spherical alloy steel ball installed in the middle of the inner ring and the outer ring, in a rolling way to reduce the friction in the process of power transmission and improve the efficiency of mechanical power transmission.
- Fan Lifetspan: 50000-70000 Hours Under 40℃ & 65%RH
- Fan Mouting: Suitable For All Installations
- Fan Noise: Higher Noise at Low Speed
- Operating Temperature: Can work under 85℃, but that will shorten the fan lifespan
- Cost: High
Dual Ball Bearing
Assembly into motor
Shaft Base & Frame Middle Tube
After fixing which type of bearing is your perfect option, here you can find out additional fan structure design information to help you maximize the fan performance.
Economic Type
Normal type of shaft base and frame middle tube are made of plastic as the following pictures, which is used with hydraulic bearing when the fan works at the low speed under normal temperature.
High Reliable Type
High reliable type of shaft base and frame middle tube are made of pure copper as the following picture. Copper base and copper tube gets more accurate and better cooling effect when operating at the high speed, which are normally used with dual ball bearing.
Plastic Tube
Copper Shaft Base
Copper Tube In Frame
Waveform of IC Functions
Different IC function can help you to know how the fan works under what status. PWM function can improve the fan energy effeciency by speed control. Here you can find out the waveforms of different IC functions.
Rotation Detector Signal / Alarm Signal
RD signal is used to detect whether the fan is running or not. When the fan is normally running, the output level is low, whereas, high output level means the fan is stopped.
FG Signal / Speed Sensor
FG Signal, as known as Tacho Signal, is to provide a square wave signal from the fan, and the signal frequency represents the speed of the fan, which means FG conveys speed info in the form of square waves and normally it works with PWM.
PWM Control
The fan speed can be controlled by Pulse Width Modulation. PWM periodically outputs the voltage at a certain time, which is called the duty cycle, usually expressed as a percentage.
Boost Your Product Performance with Custom-made DC Blower Fans
Elevate your products with customized DC blowers fans from CCHV, tailored to your industry’s specific needs. Our versatile DC Blower Fans optimize efficiency in various industries. Our R&D team crafts innovative solutions that keep you ahead of the competition. Experience the difference of partnering with us for custom-made and high-performance DC Blower Fans designed for your success.
Industries we can serve:
- Automotive
- Printing Machine
- Home Appliances
- Smart Home
Why choose CCHV
Since 2006, CCHV has specialized in developing and manufacturing high-quality DC Blower Fans. Our expert R&D team and advanced testing equipment enable us to create custom-made solutions for diverse industries. With 17+ year experiences, CCHV is qualifed to be one of China top DC blower fan manufacturers. Partner with us for exceptional ventilation solutions that cater to your specific needs.
Export Countries
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Satisfied Customers
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Served Brands
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- Qualified Fan Supplier Vendor for Philips, Osram, Haier, Huawei, ect..
- UL, CE, RoHS, TUV Product Compliant
- IATF16949 Certified Manufacturer
- 16 Automatic Production Lines In Dust-Free Plant
- Experienced R&D Team With Advanced Test Equipments
Revolutionize Your Air Circulation Solutions
with Our Specialized R&D Team
Guided by a seasoned manager with a decade of experiences in Taiwan’s fan industry, our dedicated divisions work cohesively to deliver customized, high-performance DC blower fan solutions for various industries. Benefit from our expertise in flow analysis, electromagnetic simulation, vibration research and acoustic analysis and Utilize our state-of-the-art testing equipment to ensure product reliability and stability.
Flow Analysis
Flow analysis helps to identify the optimal angles between moving and stationary impellers to enhance aerodynamic efficiency and reduce fan noise.
Motor Research
Electromagnetic simulation is used to design slot pole numbers to find out the best shape of fan motor for optimizing the motor efficiency.
Vibration Analysis
Vibration analysis is used to find out the resonant frequency for optimizing fan structure in order to solve the resonant problem after fan assembly.
Acoustic Research
Sound quality analysis helps to reduce sharp and other unpleasant audio in order to give users the most conformtable sound experiences.
Uncompromising Quality: The Benchmark of Our DC Blower Fans
Quality is our top priority, which sustains our development in passed 17 years. As IATF16949 certified manufacturer, we focus on prevention, not just inspection. From incoming materials, manufacturing to finished fan, we implement strict quality control according to VDA6.3 principle.
Materials Checking
Processes Control
Finished Product Inspection
Materials Checking
Effective incoming material inspection is critical to ensure product quality. At our company, we take this process very seriously. We utilize advanced testing equipment and a highly trained inspection team to thoroughly examine each incoming item. Our commitment to quality begins with incoming inspection and extends throughout the entire manufacturing process.
Processes Control
At our company, we take process control seriously in order to detect and address any issues as quickly as possible. We utilize quality tools such as MSA/CPK to monitor key process characteristics such as oiling volumn, impeller balancing value, fan speed, ect.. In addition, we have dedicated QC personnel for line quality control.
Finished Product Inspection
At our factory, we conduct a 100% full inspection on each fan to ensure it meets our high-quality standards and our customer’s performance requirements. Our final inspection includes the testing for fan speed, current waveform, abnormal noise, fan vibration, ect.. For high reliable fan, some special testings will be proceeded additionally.
See To Believe: Seldomly Implemented By Our Competitors
QR Quote For Tracibility
Vibration Test
Aging Test Under Room Temperature
Aging Test Under High Temperature (In Oven)
Always Keeping Smile Like Our Happy Customers
I am a project manager in India. Partnering with CCHV has been a game changer! Their customized DC fans are highly reliable and perfect for our solar storage projects. Their fast response and professional support have made our projects run smoothly. CCHV is our go-to supplier!
Rajesh Sharma
I am a procurement specialist in Italy. Working with CCHV has been a breeze! They deliver top-notch DC cooling fans that perfectly meet our UPS requirements. Their responsive service and timely shipments make my job as a procurement specialist so much easier! Highly recommended.
Isabella Rossi
FAQ
Frequently Asked Questions
These are the most frequently asked questions. If you cannot find an answer here, please contact us via email at [email protected]
For accurate quote preparation, please advise the fan size, voltage, air flow, lead wire functions, connector type and where the fan will be used. Fan size, voltage and where to used will be necessary information to get.
We have two bearing types, hydraulic and dual ball bearing. Hydraulic is also called as rifle with 30000 hours on 40 degree. And for dual ball bearing fan, the life time is 50000 - 70000 hours on 40 degree, which is also related to the motor structure design.
IP21 for simply damn-proof; IP55 with PCB coating or potting; IP68 with the whole stator potting.
For IP54 fan, it can pass 96-hour testing based on normal customer's requirement; For IP55, it can pass 10-day testing; For IP68 fan, it can pass 30-day testing.
For 5pcs less free samples, it normally takes 7 working days and for 10pcs more samples, it will takes 10-14 days.
Normally 1000pcs/fan type. Hundreds of pieces as trial run are acceptable before launching mass productions.
Production lead time is 25-30 days.
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As a Senior Mechanical Engineer in USA, I'm impressed with CCHV's R&D capabilities and customized service. Their experienced team understood our unique cooling requirements and delivered just what we needed. Great Job, CCHV!
Thomas Johnson Senior Mechanical Engineer