The Repair Methods of Jaw Crusher’s Eccentric Shaft

The wear and tear of eccentric shaft commonly happens on the jaw crusher“>jaw crusher. The main wear form of eccentric shaft has journal wear, eccentric journal wear, too large axis bending and fatigue fracture. If you correct the shaft straightening, replant and repair the broken shaft, the repair process will be more complex, meanwhile the repair quality is not easy to ensure. And therefore it is rarely used. If there is such a phenomenon, only dump it or make the material of axis used for other purpose. If the small amount of bruising, minor area wear or pull bead of journal appeared, you can grind by hand, or pull and repair with emery; you can also restore it with site brush. But the heavier wear has the following three kinds of methods.

(1), use the manual arc reactor to weld the journal surface, and then cut and process it in order to achieve the original journal size. When you weld it, you should select the right welding technology, preventing the bending and deformation of distracted axis. When you weld, you should choose a reasonable rod, the electrode diameter must be smaller, and the current strength should not be too high. After welding and processing, you should choose reasonable centering benchmark to keep running accuracy after the assembly.
(2), inlay a casement on the journal, remove the wear journal, in addition to doing a steel sleeve, the inner hole of steel sleeve should be fit with the journal, the outer diameter should be processed as the original size and tolerance. The steel sleeve should be installed on the journal, when it is hot.
(3), remove all the wear journal, in the premise of ensuring the design surface roughness to process with a minimum amount. Then make the processed journal size and its deviation as a benchmark, according to the original design with the performance to make bearings.
 

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