We have many years of experience in ECQ Electronically Commutated Motor, Centrifugal Direct Drive Fan, axial fan for dehumidifier. With the tenet of 'high quality, high efficiency and development', the company services for customers with advanced technology, quality and good price ofenterprises both at home and abroad. We have improved the product quality and enterprise management so as to provide customers with more comprehensive, professional and efficient solutions and sincere service. We have the ability and confidence to provide you with superior quality and continuous improvement of products and quality service. Our company advocates the enterprise spirit of 'professional, pragmatic, efficient and innovative', excellent working environment and good incentive mechanism, and has attracted a group of high-quality, high-level and efficient talents. We should inject new vitality and value into the brand through unremitting efforts and continuous innovation.
Production description
These units may be mounted in any orientation to provide maximum airflow in minimum areas.
(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 |
YWFF4E250 | 230 | 50 | 3.3 | 0.75 | 1300 | 0 | 2450 | 16 | 76 | ① |
YWFF4D250 | 230△/400Y | 50 | 3.0/1.7 | 0.8 | 1350 | 0 | 2600 | / | 76 | ② |
YWFF6E250 | 230 | 50 | 1.6 | 0.29 | 910 | 0 | 1700 | 5 | 65 | ③ |
YWFF6D250 | 230△/400Y | 50 | 0.75/1.3 | 0.27 | 900 | 0 | 1700 | / | 65 | 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—250
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
⑤250: The Diameter of inlet
Company profile
Founded in 1980, Ningbo lionball Ventilation Co., Ltd. is a key high-tech enterprise of the National Torch Program, which integrates product research and development, manufacturing and sales.Our company has passed ISO9001 quality management system certification and ISO14001 environmental management system certification.
"Lionball" brand after 40 years of precipitation, was awarded as a well-known trademark in Zhejiang Province.Our fan and motor products in the international industry has a high reputation and good reputation.Products are exported to the United States, Germany, Italy and other European and American countries as well as Brazil, Russia, other emerging industrial countries and other parts of the world.The main partners are Emerson, Panasonic and other world top 500 industry famous companies.The main products have passed the German VDE, the United States UL, Europe CE and RoHS and China CCC certification.
Lionball team





We adhere to the tenet of 'Integrity, Integrity, Focus on Innovation' and maintain our leading position in the industry of Centrifugal Fan 24V Centrifugal Fan 24V/48V/230V Backward/Forward Centrifugal Fan Inline Duct Ventilation Exhaust Fan Single/Double Inlet Fan. We will keep forging ahead and continue to practice the road of market-oriented reform and development of enterprises. We are adhering to the enterprise spirit of 'dedication, responsibility, and efficiency', constantly improving the industrial chain, enhancing brand efficiency, and achieving the strategic goal of product internationalization!
Hot Tags: single inlet forward centrifugal fan, China, suppliers, manufacturers, factory, customized, wholesale, price, quotation, pricelist, for sale, energy efficient motors, Shaded Pole Single Phase Motor, Square Shaded Pole Unit Bearing Motor, Compact Axial Fans, 6 inch inline fan, shaded pole ac motor






