Some users have broken the output shaft of the drive motor after several months of operation. After checking the cross section of the output shaft of the drive motor, it is found that the cross section is almost the same as that of the output shaft of the reducer. The outer ring of the cross-section is brighter, and the color of the cross-section is darker toward the axis. Finally, it is broken at the axis. This fully explains that the main reason for the broken shaft of the output shaft of the drive motor is that the motor and the reducer are not concentric when assembled.
When the concentricity between the motor and the reducer is very good, the output shaft of the motor only bears the rotational force, and the operation will be smooth. However, when it is not concentric, the output shaft will bear the radial force from the input end of the reducer. The long-term action of this radial force will force the output shaft of the motor to bend, and the bending direction will change with the rotation of the output shaft. The direction of the lateral force changes 360 degrees every time the output shaft rotates. If the concentricity error is large, the radial force will cause the temperature of the motor output shaft to rise, and the metal structure will be continuously damaged. Finally, the radial force will exceed the radial force that the motor output shaft can bear, and finally cause the drive motor output shaft to break. When the concentricity error is larger, the time for the drive motor output shaft to break is shorter. When the output shaft of the drive motor is broken, the input end of the reducer will also bear the radial force from the motor. If the radial force exceeds the maximum radial load that the two can bear at the same time, the input end of the reducer will be deformed or even broken. Therefore, it is very important to ensure concentricity during assembly.
Intuitively, if the motor shaft and the input end of the reducer are concentric, the cooperation between the motor and the reducer will be very close, and the contact surfaces between them will be closely connected. If they are not concentric during assembly, there will be a gap between the contact surfaces.
Similarly, the output shaft of the reducer is also broken or bent, and the reason is the same as that of the drive motor. However, the output of the reducer is the product of the output of the drive motor and the reduction ratio. Compared with the motor, the output of the reducer is more likely to be broken. Therefore, when using the reducer, the user should also pay attention to the guarantee of the concentricity of the output end assembly.
WPWE80-135,WPWE100-155,WPWE120-175,WPWE135-200,WPWE155-250
