Causes and methods of elimination of eccentric shaft bending or breaking of jaw crusher

The bending or breaking of the eccentric shaft may be caused by the following reasons:

1. Rollover occurs during the hoisting process of the main machine, so that the eccentric shaft is bent by force on one side;

2. The hardness of the broken material exceeds the product instruction manual;

3. Jaw crusher host long-term super negative operation;

4. The elbow plate does not meet the standard, and the non-broken material plays a self-breaking protection role when entering the crushing chamber;

5. Improper heat treatment of eccentric shaft, stress concentration, resulting in short-term fracture.

The following measures can be taken when the eccentric shaft of the jaw crusher is bent or broken:

1. Replace the new eccentric shaft and lift the main machine correctly;

2. Replace the new eccentric shaft, select the appropriate crusher according to the compressive strength of the crushing material;

3. Replace the new eccentric shaft, adjust the working load or replace the suitable crusher;

4. Replace the new eccentric shaft, do not use the elbow plate, elbow pad that does not conform to the design standard;

5. Replace the new eccentric shaft and use the eccentric shaft qualified by heat treatment.

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