With the unremitting efforts of all colleagues, the Unit Bearing Motors, inline centrifugal fan, Efficient And Low Noise Centrifugal Blower are well received by users. We will continue to pursue excellent quality, and we are willing to provide users with high-quality products and services to create a better future together. In the ever-changing business environment, the speed of response to the market often determines the success or failure of enterprises. In the face of the development of the times and the emergence of unlimited competition, we attach great importance to the cultivation and improvement of the cultural quality of our employees. We have won the recognition and praise of our customers with modern management mode, good reputation, excellent products and service. We achieve the corporate philosophy of honesty for each customer, treating customer requirements seriously.
product Introduction
(1) YWF series axial fans are external rotor motors. These motors have characteristics of compact structure, convenient installation and high efficiency etc.
2YWF series external rotor motors have two kinds, single phase asynchronous operation and three phases asynchronous operation. They are suitable for commercial freezer and cold storage room, ice machine, air cooling machine, water chiller, condensing unit, central air-conditioning and heater, etc.
(3)YWF series 100% speed control motor with low starting current. The insulation class of motor is B or F, and the protection class is IP54. All motors have thermal protector in the winding.
(4)Voltage: The voltage of the single phase motor is 120V/60Hz, 220V/50Hz. The voltage of three phases motor is 380V/50Hz, we can also supply other fan motors with connection box for clients' choices.
(5)YWF fans can be controlled speed by frequency transformer or voltage inverter, three phases fans can be adjusted double-speed by Y/△ exchange, or variety speeds by different connection.
(6)The axial fans are available with fan guard grill and without guard grill, operating with 200mm to 900mm diameter fan blades. We can offer different installation ways like cylinder (inlet ring), wall ring plate, round frame, etc.
(7)We can supply the fan motors with capacitor box or electrical wire for clients’ choices. The standard length of electrical wire on the 800 and 900mm is 1.5m.
(8)The service life of motors is more than 30,000 hours.
(9)The usable ambient temperature is from -30℃ to 60℃.
(10)Before operating the motor, make sure to put the earth wire of the motor connected with the external grounding device.
(11)Most of External Rotor Motors have passed UL approval in America, RHOS, CE approval in Europe and CCC safety certificate in China.
Product Parameter (specification)
(1)For Air Compressor:
YWF630 usually use in air compressor of 37KW
| Model | Voltage | Frequency | Current | Input PowerW | Speed | Max Air Flow | Capacitor | Noise |
YWF4D630 | 380 | 50 | 1.8 | 950 | 1300 | 12000/12300 | / | 81 |
(2)For Refrigeration and others:
| Model | Voltage | Frequency | Current | Input PowerW | Speed | Max Air Flow | Capacitor | Noise | Model |
YWF4E630 | 230 | 50/60 | 3.2/4.7 | 600/1000 | 1350/1500 | 10500/11700 | 20 | 81/83 | ①② |
YWF4D630 | 400Y | 50/60 | 1.2/1.9 | 700/1000 | 1350/1540 | 10500/11700 | / | 81/83 | |
YWF6E630 | 230 | 50/60 | 2.5/2.9 | 450/620 | 920/1030 | 9500/10800 | 12 | 72/75 | ③④ |
YWF6D630 | 400Y | 50/60 | 1.3/1.2 | 430/600 | 920/1030 | 9500/10800 | / | 72/75 |


Product feature and application
(1) Product feature:
●Compact structure
●Specialized design
●Refined process control
●Simple Installation
●High efficiency and low noise
●Long service life
Application
Ventilation | Buildings, parking lots and so on |
Refrigeration | Refrigerator, Air cooler, refrigerating machine and so on |
Heat dissipation | HAVC, Air compressor, Dehumidifier, Evaporator, Wall fan, Condenser, Dryer, AHU, Ice machine and so on |
Production details
(1)Illustration of Models
YWF 4 E 630 S W
① ② ③ ④ ⑤ ⑥
①:YWF Axial fan with external rotor motors
②:4 Pole of motor
③:E Single phase capacitor operation
D Three phases asynchronous operation
④:630 The diameter of the motor fan blades
⑤:S-Sucking B-Blowing
⑥W:Without guard grill
A:Flat
B:Flat guard grill with sidepiece
C:Concave guard grill
D:Inlet ring
E:Inlet ring with mounting plate
S:Two-speed
T:Three-speed
V:Double voltage
(2) Guard grill of different installation ways
A. Guard grill with capacitor box
| Flat | Flat guard grill with sidepiece |
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| Concave guard grill | Inlet ring |
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| Inlet ring with mounting plate | |
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B. Guard grill with electrical wire
| Flat | Flat guard grill with sidepiece |
![]() | Inlet ring |
| Concave guard grill | Inlet ring |
![]() | ![]() |
| Inlet ring with mounting plate | |
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It is necessary for us to improve and optimize the quality of Safety and Environmental Protection Fire Fighting Smoke Exhaust Axial Fan in order to make our products more competitive in the market. Our strategy in the near future is to strengthen the brand building and increase the added value of the brand. Our company adheres to the customer service tenet of 'customer first" and always adheres to the principle of "customer first', with the concept of 'customer first, customer first, continuous, honest, thorough and responsible'.
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Inlet ring







