Why is the speed control motor susceptible to electrical failure?
Many people want to know the reason why the speed control motor is prone to electrical failure. The following small series will give you some points and hope to help the readers or customers.
1. There are many rubber rollers in the offset printing machine . Each rubber roller supports the rotation by bearings . Because of this mechanical part, the speed regulating motor is faulty. In this case, we generally call the main engine speed to decrease periodically . For example: If the bearing of any one end of a rubber roller fails, the speed of the main engine may be periodically peaked. In severe cases, the rotation of the main machine will be more difficult, and the bearing should be replaced immediately. In addition, it should be noted that the operation of the bearings of the main drum ( including the printing plate, rubber, impression cylinder ) and its lubrication parts is normal, and if the failure occurs, the printing speed will also be affected.
    2 , the main drive speed control motor running noise is also one of the reasons. In order to adjust the dynamic balance of the slip motor, the two ends of the armature and the pole rotor are respectively equipped with weighting devices. If this part of the device is slightly loose, the slip motor will deviate from its original position when it is rotated at a high speed. If the fault occurs in the outer surface of the main drive motor, it will cause local friction between the armature and the pole rotor, which will increase the noise. At this time, it is necessary to stop the repair, restore the dynamic balance of the armature and the pole rotor, and re-find the position of the original balance weight and fix it to make the main drive motor run normally.
3. The speed regulating motor will vibrate violently during the operation, causing the bearing to heat up . This situation will cause the speed regulating motor to operate abnormally . Disassemble the clutch armature and the pole rotor to check whether the bearing of the motor is seriously lacking grease, which causes severe bearing wear and degrades the running performance of the motor. At this point, you need to replace the damaged bearing and add grease. Under normal circumstances, all parts of this part of the mechanism should be cleaned and refueled to ensure the normal operation of the main drive speed regulating motor .
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