The categories of our piped centeifugal fan, High power brushless motor, External Rotor Axial Fan are diversified and their designs are fashionable, that's why they are highly competitive in the international market. All along, we adhere to the customer-oriented, market-oriented, constantly improve product quality and develop product types to meet the growing needs of customers. With sincere service, perfect management and professional attitude, we meet the needs of new and old customers to the maximum extent, ensure the interests of customers and establish a good market reputation and brand effect. With professional technology, mature products, advanced quality, stable supply and honest service, we have gained a good reputation in the market and stand out among the peers. Each product is carefully made, it will make you satisfied.
Production description
Single Inlet Forward Centrifugal fans and blowers are compact units that can be used to either pressurize or evacuate in air moving applications. The impellers are permanently mounted to the external rotors for ease of installation and maintenance-free operation. These units may be mounted in any orientation to provide maximum airflow in minimum areas.
Forward centrifugal blowers always require scroll housing, which is open on one side. The characteristic features of this product series are high efficiency, a low noise level, relatively small air flow with a high increase in static pressure, robust design and space-saving application.
(1)YWF External Rotor Centrifugal Fans are divided into forward centrifugal fan and backward centrifugal fan according to curved blades, which have compact structure, convenient installation, credible running, little noise, energy saving and high efficiency.
(2) Several speed ranks, adapt to both frequency conversion and voltage transformation speed changing active. Our products are widely used in duct fans, roof ventilator, air purifying equipment, air conditioning, and household appliances, etc.
(3)The voltage of the single phase motor is 220V, 50/60 Hz, and the voltage of three phase motors is 380V, 50/60Hz. We can also supply other fan motors with different voltages and frequencies according to clients' requirement.
(4)The safety grade of this series is IP54, and the insulation classes are class B and class F.
(5) The applicable ambient temperature of the fan motors used in condenser is from -30℃~60℃.
(6)The average service life of motors is over 30,000 hours.
(8) Our products have gotten UL approval, CE approval and CCC approval.
(9) Product Features
① —Material: Housing: galvanized sheet steel
Impeller: galvanized sheet steel
Rotor: Coated in black plastic
② Bearings: Maintenance- free ball bearings
③ Direction of rotation: Clockwise, seen on rotor
④All models have reached UL approval, CE approval and CCC approval
⑤The type of protection is IP54. All models are fitted with an internal Thermal Overload Protection Device
⑥ Mounting position: Shaft horizontal or rotor on bottom; rotor on top on request (Any)
⑦Insulation class is class B or class F
Performance parameters
| Model | V | Frequency | Current | Input Power | Speed | PA | Max Air Flow | Capacitor | Noise | Curve |
YWFF4E225 | 230 | 50 | 2.3 | 0.48 | 1350 | 0 | 1800 | 8 | 74 | ① |
YWFF4D225 | 230△/400Y | 50 | 1.44/0.85 | 0.44 | 1350 | 0 | 1800 | / | 74 | ② |
YWFF6E225 | 230 | 50 | 1 | 0.23 | 930 | 0 | 1300 | 6 | 60 | ③ |
YWFF6D225 | 230△/400Y | 50 | 1.35/0.8 | 0.24 | 930 | 0 | 1300 | / | 60 | ④ |


Product feature and application
(1) Product feature:
●Compact structure
●Specialized design
●Refined process control
●Simple Installation
●High efficiency and low noise
●Long service life
(2)Application
●Condenser
●Evaporator
●Pipe fan
●Roof ventilator
●Heat dissipation and ventilation
Illustration of Models
YWF—F—2—E—200
① ② ③ ④ ⑤
①YWF: External Rotor Centrifugal Fan
②F: Forward
B: Backward
D: Double Inlet
③(2,4,6):Pole of Motor
④E: Single Phase Capacitor Operation
D: Three Phases Asynchronous Operation
⑤200: The Diameter of inlet
Deliver and serving
(1)Deliver
About 30-40 days after receive client’s payment. Because we are manufacturer, and we don’t have production in stock. We will arrange production as soon as possible.
(2)Service
①Pre-sales services:
We have Personalized Customization Scheme for every client.
We will adjust the voltage, frequency, length of line and other detail character according to client’s demand.
②After-sales services
According to the requirements of consumers, carry out the technical guidance on the use and other aspects
Dealing with customers' letters, visits and telephone complaints, answering customers' inquiries. At the same time, we will use various ways to collect the opinions of consumers on the quality of products, and improve them in time according to the situation.
warranty: one year after ETD.
Our organization insists all along the quality policy of 'product quality is base of business survival; purchaser gratification is the staring point and ending of an business; persistent improvement is eternal pursuit of staff' as well as the consistent purpose of 'reputation 1st, purchaser first' for 225*125mm Ec-AC Backward Curved Centrifugal Fan. We pursue harmonious development, mutual benefit and win-win results, and make positive contributions to economic construction and social progress. Our company strives to create a good atmosphere for employees to learn all the time and everything.
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