We are always competing in the marketplace by adding value through quality and ensuring that our Backward Centrifugal Fan For Hutch Defends The Fan, Unit Bearing Motors For Cake Cabinet, Backward Centrifugal Fan For Central Air-conditioning is the best of the kind. We adhere to the principle of honest management and advanced marketing concepts, and win the support and trust of our customers with the sincere attitude. We believe that only with quality can there be a market, and only with improvement can progress be made, waiting is the source of failure and action is the beginning of success.
Production description
| The diameter of Impeller | 500mm | |
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 | Curve |
YWFB4E500 | 230 | 50 | 6.9 | 1560 | 1340 | 7680 | 42 | 82 | ① |
YWFB4D500 | 400Y | 50 | 2.68 | 1600 | 1360 | 8200 | / | 82 | ③ |
YWFB6D500 | 400Y | 50 | 1.3 | 470 | 910 | 5500 | / | 70 | ③ |


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
Protection details

FAQ
(1)Q: Are you a manufacture factory?
A: Yes,we are one of the leading manufacturers of fans and motors in China since 1980, Our factory occupied area of 26000square meters, located in Yinzhou district, Ningbo. We have more than 300 employees.
(2)Q: Which product certification do you have?
A: Our products are approved VDE certificate, UL certificate, CE certificate, ROHS certificate, CCC certificate, SASO certificate and so on.
(3)Q: How about our company's quality control system??
A: We have gotten IS09001:2008 certificate(SGS)
(4)Q: How long is the warranty of your products
A:One year after ETD
(5)Q:What kind of trade terms and payment terms?
A: Trade terms: EXW, FOB
B: Payment terms: T/T, L/C
Company profile
NINGBO LIONBALL VENTILATOR CO.,LTD. was established in 1980. Lionball is one of the key Hi-Tech enterprises of the National Torch Program and a production enterprise combining development,manufacturing and sales together.And our products exported to the United States, Germany, Italy and other European and American countries as well as Brazil, Russia, other emerging industrial countries all around the world.Major partners include EMERSON(EMERSON), PANASONIC (PANASONIC) and other famous companies in the global 500 industry.The main products have been approved by VDE, UL, CE and ROHS and CCC.
As an enterprise with 40 years of operation history and continuous development and progress, Ningbo Lionball Ventilator Co., Ltd. has established a good cooperative relationship with the global producer and distributors. We believe that our high-quality products, good service and excellent corporate reputation will bring us a win-win situation.
In order to protect the global environment, we are actively working on the development and production of energy-saving and environmentally friendly 160 Corrosion Resistant Plastic Lab Fume Cupboard Exhaust Fan. We believe that providing customers with high quality products and satisfactory services is the vision of enterprise development. In the face of opportunities, we dare to be the first; in the face of hardships, we dare to explore; in the face of backwardness, we dare to rise.
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