Our company is a modern enterprise, producing Backward Centrifugal Fan, shaded pole blower, axial fan for dehumidifier in many countries and regions and industrial globalization has been our strategic direction. We recognize that people-oriented and rule by law are the starting and ending points of enterprise management innovation. We always adhere to the core concept of 'integrity, pragmatism, and excellence', always adhere to the policy of 'quality is the life of the company', and constantly improve innovation capabilities, and strive to create products that customers need. We will create a modern marketing system for you, including market development, sales management, customer satisfaction management, staff professional training, profit model innovation and other systems.
Production description
Backward Centrifugal blowers are used primarily for intake suction and do not require a scroll housing. They have high hydraulic efficiency.
Backward centrifugal impellers offer a quiet and compact air moving solution. The Permanent Split Capacitor (PSC) motors provide reduced operating costs and longer service life. Ball bearing construction allows multiple mounting options. Backward centrifugal impellers have low profiles that do not require an enclosure. Air is discharged 360°radially from the impeller wheel. These units operate very efficiently at high pressures.
| The diameter of Impeller | 280mm | |
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℃ | |
Performance parameters
| Model | Voltage | Frequency | Current | Input Power | Speed | Max Air Flow | Capacitor | Noise | Curve |
YWFB2E280 | 230 | 50 | 0.85 | 190 | 2450 | 1900 | 5 | 67 | ① |
YWFB2E280H | 120 | 60 | 3.1 | 380 | 3100 | 2050 | 30 | 85 | ② |
YWFB4E280 | 230 | 50/60 | 0.36/0.46 | 78/102 | 1420/1630 | 1400/1600 | 3 | 62/67 | ③④ |
115 | 50/60 | 0.72/0.92 | 78/102 | 1420/1630 | 1400/1600 | 12 | 62/67 |


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
Exhausting industrial processes, roof and building ventilation, clean room and other sensitive HEPA filtering application, laboratory and research facility ventilation, air conditioner, heat exchangers, in-line duct blowers, range hood, fire place inserts, humidifiers, dehumidifiers, hand dryers
Production details

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.
We can design and process according to the actual situation of users and their requirements, and fully solve the various needs of users in Low Noise 355mm Backward Inclined AC Centrifugal Fan. Our company through technological innovation to shorten the production cycle of products, improve productivity. Also we can produce different products according to your samples.
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