The motor bearing is an important part in the motor, and its axial fixation directly affects the running accuracy, stability and life of the motor. In this paper, the axial fixation methods of motor bearings are discussed deeply, the advantages and disadvantages of different fixation methods are analyzed, and the corresponding suggestions are put forward.
The axial fixing methods of the motor bearing mainly include the following: lock nut fixing, stop washer fixing, spring washer fixing, end cap fixing, etc. These fixing methods have their own characteristics and need to be selected according to the specific situation.
Lock nut fixed
Locking nut fixing is a commonly used axial fixing method. By installing locking nut on the bearing jacket, the inner ring and outer ring of the bearing are fastened together to achieve axial fixing. The advantage of this fixing method is that the structure is simple and easy to install, but the disadvantage is that it may be loose at high speed, resulting in bearing damage.
Stop washer fixed
Stop washer fixing is a reliable axial fixing method, by installing a stop washer on the bearing jacket, the bearing inner ring and the outer ring are fastened together, so as to achieve axial fixing. The advantages of this fixed method are simple structure and good stability, but the disadvantage is that the installation is more difficult and requires certain skills and tools.
Spring washer fastening
Spring washer fixing is a relatively simple axial fixing method, by installing a spring washer on the bearing jacket, the bearing inner ring and the outer ring are fastened together, so as to achieve axial fixing. The advantage of this fixed method is that it has a simple structure and is easy to install, but the disadvantage is that it has poor stability and is suitable for low-speed motors.
End cap fixing
End cap fixing is a common axial fixing method, by installing end caps at both ends of the motor, the bearing inner ring and the outer ring are fastened together, so as to achieve axial fixing. The advantages of this fixed method are good stability and suitable for high-speed motors, but the disadvantage is that the structure is complex and the installation is more difficult.
This paper discusses the axial fixing methods of motor bearings, including locking nut fixing, stop washer fixing, spring washer fixing and end cap fixing. Different fixing methods have advantages and disadvantages, and need to be selected according to the specific situation. When choosing the axial fixing method, it is necessary to consider the operating speed, load size, working environment and other factors of the motor to ensure the stability and life of the bearing. At the same time, for different axial fixing methods, different installation methods and tools need to be used to ensure the installation quality and effect. The future research can further explore the dynamic characteristics and application range of different coaxial fixation methods, and provide a more accurate basis for the design and selection of motor bearings.
