Our company has a strong customer base, a high-quality professional team, and a complete sales network to provide high-quality products and perfect services for various in line extractor fan, axial fan for air?cleaner, duct fan silent. Our business philosophy is to strengthen the main business, pioneering, people-oriented, diversified development. Our company establishes market leadership for you with high-efficiency production capacity and complete supply methods. We are the first business partner for you!
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






We promise to maintain the high quality of our 230V 210/285W Ebmpapst R2e250-Ra50-01 Backward Curved Centrifugal Fan Used for Electrical Power Unit from beginning to end, and continue to introduce new ones to create higher value for customers. Our company's management tenet is: take the quality as the foundation, take the specialized service as the foundation and take the supreme prestige as the guarantee. Based on the tenet of "survive by quality and development by technology", our company wholeheartedly cooperates with friends at home and abroad for common development, and welcomes customers from all walks of life to come and negotiate.
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