Our personnel are generally in the spirit of 'continuous improvement and excellence', and together with the outstanding top quality merchandise, favorable price tag and fantastic after-sales solutions, we try to gain every single customer's rely on for Centrifugal Wood Stove Fan Blowers, shaded pole single phase induction motor, High Pressure Centrifugal Fans. We focus on global development and establish an industry-leading model of diverse corporate culture and operating models. We have established a complete after-sales service system, provide customers with professional system solutions, and constantly strive to achieve customer benefits. Our company keeps up with the increasingly fierce market management and is ready to do a good job in the face of increasingly fierce competition.
Production description
| The diameter of Impeller | 560mm | |
Material | Impeller | PA plastic 66, fibre glass-reinforced |
Rotor | Coated in black plastic | |
Direction of rotation | Clockwise, seen on rotor | |
Counter-Clockwise, seen on rotor | ||
Type of protection | IP44 or IP54 | |
Insulation class | Class B or Class F | |
Mounting position | Shaft horizontal or rotor on bottom; rotor on top on request(Any) | |
Condensate discharges | Rotor-side | |
Approvals | CE, CCC,UL and so on | |
Mode of operation | Continuous operation(S1) | |
Bearings | Maintenance- free ball bearings | |
Motor protection | Design with thermal overload protector | |
Cable exit | variable, lateral | |
Ambient temperature | -20℃ to 60℃ | |
Advantage | YWF series centrifugal fan with external motor has features of compact structure,convenient installation, credible running, little noise, energy saving and high efficiency. | |
Performance parameters
| Model | Voltage | Frequency | Current | Input Power | Speed | Max Air Flow | Capacitor | Noise |
YWFB4D560 | 400Y | 50 | 2.95 | 1800 | 1380 | 10250 | 85 | ① |
YWFB6D560 | 400Y | 50 | 1.4 | 620 | 920 | 7300 | 72 | ② |


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
Production details

The Research and Development Center
The Research and development center of Ningbo Lionball Ventilator Co., Ltd is a national R&D center. It is appraised as High-tech Enterprises and Engineering Technology Center and has obtained many important prizes in the provincial projects.
Research and development center currently has 25 staff members. We introduced Germanic technology and employed a well-paid fan expert as our technical adviser. What is more, we have cooperated with international renowned enterprise EMERSON for about 5 years and will hand in hand with Carrier China.
Research and development center are facilitated with modern equipment and advanced laboratories: Air flow laboratory and life testing laboratory. We provide each member with professional inspection equipment for better research environment.
Over the past two years, owing to continuous effort of R&D team, we have successively obtained 15 certificates of Utility Model patent and 2 certificates of Invention Patents.
(1)Our Certificates of Utility Model Patent




(2)Certificates of Invention Patent

Difference between forward centrifugal fan
(1)efficiency: the efficiency of the forward leaning centrifugal fan is lower than that of the backward leaning centrifugal fan.
(2)energy consumption: because the efficiency of the forward leaning centrifugal fan is low, its natural consumption for electric energy is greater than that of the backward leaning type.
(3)noise: when the forward leaning centrifugal fan is in operation, the noise emitted by the forward leaning centrifugal fan is larger than that of the backward leaning fan.
We are committed to providing our customers with perfect experience through superb Y2 Series 8 Pole Three Phase Induction AC Electric Motor and services and the integration of quality resources. We strictly implement the production standards and pay attention to product quality. At the same time, our company also actively communicates with customers to understand the needs of customers, recognize our shortcomings and provide professional and timely after-sales service for customers. We continue to improve our science and technology innovation system and enhance our product and technology development and production capacity.
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