Aluminum motor housing is generally cast iron (pig iron) casting, you can use the angle grinder in the crack grinding V bevel, and then welded with cast iron welding rod. This can only be an emergency, in the long run, it is better to replace the housing, so as to avoid the motor in operation, the occurrence of "rolling package" (housing and stator wire package, the position of movement, the motor wire package lead wire yanked off), resulting in motor damage and scrap.

The motor housing cannot be perfectly concentric with the stator due to the accuracy of the casting, but during the production of the motor, the inner circle of the motor housing casting is machined so that the inner circle of the casting is concentric with the stator and rotor.

Since the manufacturing materials of different aluminum motor casings will have different technical standards, it will be more guaranteed to choose according to actual needs, especially in terms of use effects, there will be very stable performance. According to actual needs, materials from well-known manufacturers are of better quality and more compliant.

The aluminium housing motor is known as a green product in the motor industry due to its low pollution and is favoured by more and more countries, especially in the more economically developed countries where aluminium housing motors have become quite popular.