How to remove fan blades from motor shaft?
You could try holding the shaft (close to the motor) with vice grips and using a channel lock on the hub of the blade and try turning it to break the rust. First uses emery paper to sand the shaft after the hub. Also just keep soaking it. It will be some work. If that does not work, where you get the motor pick up a new blade.
What causes a bearing failure on a fan shaft?
A facility manufacturing intermediate chemical compounds for plastics manufacture has a large number of air-cooled systems with numerous fans driven by electric motor and speed-reducing pulleys. Over the years it experienced many premature bearing failures on the fan shafts. Figure 1.
What kind of fan does an AC motor use?
Electrical and Mechanical Losses. In addition, the external frames of the motor are usually provided with cooling ribs to increase the surface area for heat radiation. The most common type of AC motor is the totally enclosed fan cooled (TEFC) motor, which is provided with an external forced cooling fan mounted on the non-drive end (NDE)…
How to remove the blade from a condenser fan?
Please keep in mind that the condenser fan motor is bad and you are not worried about saving the fan motor only the fan blade. We do not want to damage or bend the fan blade. 1. Sand the existing shaft with sand cloth to remove the rust if any of the shaft is sticking up out of the top of the hub. 2. Use WD40 on shaft and lock nut.
You could try holding the shaft (close to the motor) with vice grips and using a channel lock on the hub of the blade and try turning it to break the rust. First uses emery paper to sand the shaft after the hub. Also just keep soaking it. It will be some work. If that does not work, where you get the motor pick up a new blade.
What kind of fans are used for AC induction motors?
For AC induction motors, cooling air is usually circulated internally and externally by one or more fans mounted on the rotor shaft. To allow for operation of the machine in either direction of rotation, fans are usually of the bi-directional type and made of a strong plastic material, aluminum, or steel.
How is the cooling of an AC motor done?
Cooling is necessary to continuously transfer the heat to a cooling medium, such as the air. The different methods of cooling rotating machines are classified in the standards IEC 34.6 and AS 1359.21. For AC induction motors, cooling air is usually circulated internally and externally by one or more fans mounted on the rotor shaft.
What are the standards for cooling a rotating motor?
The different methods of cooling rotating machines are classified in the standards IEC 34.6 and AS 1359.21. For AC induction motors, cooling air is usually circulated internally and externally by one or more fans mounted on the rotor shaft.