Overview of Motor Fan Blades
Xi'an Xima motor fan blades come in three main types: plastic fan blades, aluminum fan blades, and iron fan blades. Xima motor fan blades are corrosion-resistant, have high strength, low noise, high efficiency, and are aesthetically pleasing with easy installation. They are crafted with precision, and we keep a large inventory of fan blades and other components for standard motors. Customized fan blades can also be made according to customer requirements.

Motor Fan Blade Overview
A motor fan is a type of fan that consists of a fan hub and blades. The fan blades are inserted into evenly distributed slots along the outer circumference of the fan hub and are permanently connected by welding, bonding, or other methods to form an integrated unit. The motor fan has good overall balance, which saves the time needed for balancing adjustments, and its weight is over 30% lighter than bolted fan types. Using this type of fan reduces vibration and noise during motor operation.

Although motor fans are highly reliable, they are still mechanical components, and their speed may decrease or even stop after long periods of use. Therefore, it is advisable to monitor the fan’s operating status in real-time to detect any issues promptly. There are two types of monitoring methods for fans: alarm sensors and speed sensors. Alarm sensors provide a signal when the fan speed drops below a certain threshold, while speed sensors allow for real-time monitoring of the fan's speed. The alarm signal output from the fan circuit has two states: "high" and "low," where high indicates "fault" and low indicates "normal." The speed signal is usually in the form of pulses, with each pulse representing a complete revolution of the fan. This signal can be directly transmitted to the main unit for display via a data bus. Some fans output a signal that is not the actual fan speed, but a multiple of the speed, such as two, four, or six pulses per revolution. This signal must be processed to reflect the true fan speed. To verify if the displayed speed is accurate, a tachometer can be used to measure the actual speed and compare it with the displayed data. The fan’s speed signal is typically output through a three-wire connector, where the yellow and black wires provide +12V power and ground, respectively, while the third wire is the speed signal output. It should be noted that in some three-wire fans, the third wire is not the speed signal but a speed control signal, which inputs the speed control signal to the fan motor.

Motor Fan Blade Specifications
Motor fan blades are distinguished by the motor's frame number, such as the Y series: 80, 90, 100, 112, 132, 160, 180, 200, 225, 250, 280, etc.

Considerations When Purchasing a Motor Fan

1. Check the Documentation
   The motor fan should come with an instruction manual, product certification, electrical wiring diagram, and packing list. Check the packing list and verify the components.

2. Examine the Fan’s Appearance
   Carefully inspect the fan guard and blades for any obvious deformation. When rotating the blades, they should move smoothly and not stop at the same position.

3. Check the Starting Performance
   Starting performance is an important quality indicator for motor fans. During testing, at a low speed and 85% of the rated voltage, the motor fan should start from a standstill and operate normally. The shorter the time it takes for the fan to start and reach normal operation, the better the starting performance.

4. Check the Speed Adjustment Performance
   After power is applied, the fan's mechanical transmission parts should not make abnormal noises. The motor and fan blades should operate smoothly with low vibration and noise at high, medium, and low speeds. The fan’s oscillation and stopping should be responsive, without any hesitation, stagnation, or shaking.

5. Check for Leakage
   If you feel a tingling sensation when touching the fan after powering it on, use a voltage tester to check for leakage. If the tester lights up, the casing has a leakage issue and should not be used.

6. Check the Fan’s Continuous Operation
   After the fan has been running continuously for two hours, if the casing feels hot to the touch, it indicates that the temperature is too high and the fan should not be used. Normally, the temperature of the casing should remain below 50°C and should not be hot to the touch.