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+86 15905815074
E-mail：jjcathy@motorfactory.cn
jjdq01@motorfactory.cn
Xukou Factory Address: No. 228 Wangjia, Pingfan Village, Xukou Town, Fuyang District, Hangzhou City, Zhejiang Province
Dongzhou Factory Address: No.1 Dongzhou Industrial Functional Zone, Dongzhou Street, Fuyang District, Hangzhou City, Zhejiang Province
When the covered pole motor is running, if there is a lot of noise, it needs to be taken seriously by the staff. So what's the reason for the loud noise? How to handle it? Let's analyze it in detail below.
1. The number of slots in the rotor and stator cannot be matched, or the value of the rotor slot is not large enough, which can lead to frequency noise.
Reason: The structure of the motor was not reasonable during the design and manufacturing process.
Solution: Recheck the number of slots and coordinate the number of slots between the rotor and stator, or select an appropriate rotor slot value.
2. Use a multimeter to check the main winding. If the resistance value of the main winding is relatively low, it will cause the motor to emit electromagnetic noise.
Reason: Insufficient number of turns in the coil when winding the main winding.
Solution: Increase the number of coil turns based on the condition of the original main winding.
3. During the rotation of the motor, the extended end of the shaft moves back and forth, causing a sound of impact.
Reason: The gap between the rotor shafts is too large, and the rotor gasket keeps hitting the bearing end face.
Solution: Increase the number of rotor gaskets and control the gap between rotor shafts properly.
4. By pulling the rotor shaft up and down, one can clearly feel the rotor shaft shaking, accompanied by a rustling sound when the motor is running.
Reason: The bearings wear out severely after prolonged operation, or the gap between the bearings and the rotor is too large.
Solution: Replace the bearings and add appropriate lubricating oil.
5. When the motor is running, there is a "gag" sound.
Reason: Improper fit between bearings and shafts, poor fit between bearing seats, unreasonable disassembly and assembly of bearing steel rings, resulting in noise caused by bearing damage.
Solution: Replace the bearing.
There are many reasons that can cause the covered pole motor to produce noise. If you hear abnormal noise during normal times, you should check the source of the noise and handle it correctly.
