Product Application

Inner rotor axial fan is a highly efficient and compact cooling device, whose core feature is that the motor rotor is located on the inside of the stator and directly drives the impeller through the main shaft. Compared to outer rotor fans, this structure enables it to achieve higher speeds and greater air pressure, making it particularly suitable for scenarios with limited installation space that require forced ventilation and heat dissipation against certain resistance, such as industrial and commercial equipment like electrical cabinets, small cooling towers, chillers, and heat pumps.

To ensure safe and efficient operation, it is typically equipped with an external metal protective grille, which effectively prevents foreign objects from entering. It is crucial to note during use: the fan must never be operated without the impeller installed, as its motor relies entirely on the airflow generated by the rotating impeller for cooling. Running without load will instantly cause the motor to overheat and fail.

Basic Information

Fan Type	AC Φ450-Φ600mm Wall Mounted Internal Rotor Motor Axial Fan with Nylon Impellers
Blade/Net mesh Material	Nylon
Guard Material	Carbon Steel
Motor	AC Internal Rotor Motor
Speed	Single Speed
Protection Class	IP54
Insulation Class	B
Useage	It can be applied in various cooling scenarios, such as condenser and evaporator heat dissipation, commercial HVAC systems, electrical cabinet cooling, and cooling for equipment like injection molding machines, laser cutting machines, fruit and vegetable dryers, and heat pumps.

Main Features

1. Nylon Blades, Lightweight & Corrosion-Resistant

2. Die-Cast Aluminum Motor for Efficient Heat Dissipation

3. Rust-Resistant Steel Frame, Robust & Durable

4. High Airflow with Low Operating Noise

5. Wall-Mount Design for Easy Installation

Technical Parameters

Type	Impeller Diameter (mm)	Voltage (VAC)	Frequency(HZ)	Input power (W)	Speed (Rpm)	Max Airflow (M3/h)	Noise(dB)
YWF-N-4-450	φ450	220/380	50/60	250	1400	5000	73
YWF-N-4-500	φ500	380	50	550	1400	7450	78
YWF-N-4-550	φ550	380	50	750	1400	11000	82
YWF-N-4-600	φ600	380	50	1100	1400	11000	83

Company Profile

SHANGHAI WEIMA ELECTRIC EQUIPMENT CO., LTD was established in 2009 and is located in the internationally renowned and conveniently located, beautiful city of Shanghai.The company has strong technical force and advanced production equipment, has perfect quality assurance system and first-class testing equipment, is a professional production of various types of micro motor, (fan), outer rotor axial flow fan, pipeline axial flow fan, centrifugal fan, a variety of blower, a new air change machine ventilation, ventilation equipment. Enterprises through the ISO9001 quality management system certification, ISO14001 environmental management system certification, products through the CCC, CE certification, the outer rotor fan made in the national industrial products production license.

In the fierce market competition, enterprises rely on strict scientific management, reliable quality of products around the world to win the trust of our customers.We have first-class CNC machining equipment, with an annual production capacity of millions of units, and we have 15 years of experience in the research and development and production of fans and motors.During the processing of our products, strict quality inspections are carried out before leaving the factory. Welcome to call us for any custom fan or motor solution.

Contact: Ameiy Email: wormal03@weimash.com Wechat(whatsapp): 86-18001760128 MOQ: 100 pcs.

Packaging&Shipping：

Our products are usually packed in cardboard boxes with PE bags inside. We will pay attention to prevent collision, and the shipping mark can be made according to customer's requirements.

 Payment terms ,Delivery and Service：

Payment: All payments can be negotiated, usually by T/T or L/C at sight.

Delivery time: After receiving your payment, we will arrange production. We will ship the goods to your port of delivery as soon as possible.

Service: One year warranty, online technical service.

FAQ:

Q1:If there is no product size that meets the requirements, can it be customized?

A:If we can produce the required products, we can produce the required products according to the drawings and requirements provided by customers.

Q2:How long does it take to produce?

A:There is a stock can be sent Immediately. If there is no stock, one month at the latest.

Q3:How long does it take to ship?

A:It will take about 5-7 days to arrive by express and air. It may take up to a month to ship. It takes different time for different geographical locations.

Q4:Can you provide samples?

A:Yes. We can provide samples, but because most of the samples are sent by express, the cost may be very high.

 After-sale Service:

Guide installation

Guidance on online service delivery

Advance service, whole process service

Communicate operation with customer's technicians