Explanation and solution of broken shaft of reducer

Sometimes, the reducer can break the shaft.Why does the output shaft of the drive motor of the reducer break?In order to solve this problem, the cross-section of the output shaft of the drive motor unit of the reducer was checked.It can be said that the cross section of the output shaft is the same as that of the reducer.

This can simply explain that the main factor that causes the drive motor of the reducer to break the shaft is that the motor is not concentric with the reducer when it is running.

If there is a large deviation in the degree of concentricity loss, the radial force will increase the temperature difference of the motor transmission shaft and damage the metal structure.After all, the radial force will exceed the radial force that the output shaft of the motor can bear, and the output shaft of the driving motor will eventually break.

When the concentricity guarantee of the motor device and the reducer device is relatively perfect, the energy received by the motor drive is only rolling, and the lubrication during operation is also good.But in the case of misalignment, the output shaft should bear the radial force from the input end of the reducer.The long-term effect of this radial force will force the output shaft of the motor to bend, and the direction of bending will change as the output shaft rolls.Every time the output shaft rolls, the direction of the lateral force changes by one revolution.

In short, if the motor unit and the input position of the reducer are concentric, that is, the reducer and the motor operate closely and are in close contact, and assuming the unit is not concentric, there will be a space between their contacts surface.

The greater the concentricity error, the shorter the break time of the output shaft of the drive motor.When the output shaft of the driving motor breaks, 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, the action will also cause the input end of the reducer to deform or even crack.Therefore, ensuring concentricity is the main way to prevent broken shafts.