We focus on the main business of production and operation of the EC Motor, inline centrifugal fan, Shaded Pole Induction Motor, optimize the industrial layout, promote deepening reform and innovation-driven development. Our company has always adhered to the 'customer first, quality first' principle, Since its establishment, it has established a strict quality management system. Welcome to visit our company, factory and our showroom where displays various products that will meet your expectation. If vital, welcome to make contact with us by our web page or telephone consultation, we've been likely to be pleased to serve you. Our company has launched fierce competition in overseas markets through various channels and quickly entered the international market.
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 | 225mm | |
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 |
YWFB2E225 | 230 | 50/60 | 0.42/0.55 | 92/135 | 2500/2700 | 970/1050 | 3 | 67/68 | ①② |
115 | 50/60 | 0.84/1.1 | 92/135 | 2500/2700 | 970/1050 | 12 | 67/68 | ||
YWFB2E225H | 115 | 60 | 1.7 | 200 | 2850 | 1340 | 18 | 69 | ③ |
YWFB4E225 | 230 | 50/60 | 0.23/0.25 | 50/58 | 1500/1700 | 550/620 | 2 | 52/55 | ④⑤ |
115 | 50/60 | 0.46/0.5 | 50/58 | 1500/1700 | 550/620 | 8 | 52/55 | ||
YWFB2E225P | 230 | 50/60 | 0.65/0.8 | 150/190 | 2600/2800 | 1100/1250 | 4 | 68/69 | 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
●Condenser
●Evaporator
●Pipe fan
●Roof ventilator
●Heat dissipation and ventilation
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. Lionball has passed the certification of ISO9001 Quality Management System and ISO14001 environmental management system certification.
Lionball specializes in the production of external rotor axial fans, centrifugal fans, shaded pole motors, unit bearing motors, EC motors, sewing machine motors and medical centrifugal motors.Our products are widely used in ventilation, air-conditioning, refrigeration, medical treatment, fresh air, air purification, new energy, auto parts, appliances and other areas. Our company covers an area of 30,000 square meters and employs about 300 Chinese and foreign workers.After 40 years of history of precipitation, "Lionball" brand wins the “Famous Trademark” in Zhejiang Province."Lion ball" brand motors and "Lion ball" brand fans own great awareness and reputation on the international markets.
Lionball team






Our company always pursues the principle of excellence, regards product quality as the life of the enterprise, and seeks for the opportunity of development in the innovation and development of 280mm Factory Direct for Gas Purification Backward Curved Boiler Blower Fan. To work with an excellent products manufacturer, our company is your best choice. We have established a comprehensive employee protection system, and we also provide benefits to every employee through various forms.
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