Jaw crusher eccentric shaft and bearing wear, is a common type of crusher problems, since troubled many users. Worn eccentric shafts and bearings are eliminated because they cannot be used, and more parts increase the production cost, what to do? We can try to repair the worn parts to extend the service life.
1、Jaw crusher eccentric shaft wear repair
China jaw crusher jaw crusher eccentric shaft wear in the form of serious wear of the journal and eccentric section of the journal, excessive bending of the axis and fatigue fracture.
If the shaft is straightened and corrected and the broken shaft is repaired, the repair process is complicated and the repair quality is not easy, so it is rarely used. If such phenomenon, only scrapped, or the shaft material for other purposes.
A small amount of abrasion of the journal or a small area of large wear or pull channel, can be repaired by hand grinding or grinding with emery to repair, but also can be repaired with on-site brush plating.
Heavier wear can be repaired by the following three methods:
(1) Turning the worn journals and machining them with small machining volume under the premise of designing surface roughness, and then taking the machined journal size and its deviation as the benchmark, the bearings will be matched according to the fit performance of the original design.
(2) Hand electric arc welding surfacing journal surface, and then cutting processing to achieve the original design of the journal size. Surfacing should be the correct choice of surfacing process to prevent bending and deformation of the centering shaft. Surfacing should be reasonable selection of welding rod, welding rod diameter should be small, the current intensity should not be too high. Reasonable centering reference should be selected when processing after surfacing to maintain the running accuracy after assembly.
(3) journal set sleeve, the wear of the journal turning, another steel sleeve. Bore of the steel sleeve and journal should be interference fit, the outer diameter according to the original design size and tolerance processing. Steel sleeve should be hot mounted to the journal, the thickness of the dimensions to meet the D-d>b, D for the outer diameter of the steel sleeve, d for the journal diameter, b for the journal with the thickness of the bearing (thickness of the copper tile or pasteurized alloy)
2、Jaw crusher bearing wear repair
Commonly used sliding jaw crusher bearing materials are bronze and pasteurized alloy. Crushers with circulating lubrication have less accidental bearing wear due to good lubrication and cooling conditions. When the shaft tile is worn out, more tiles are used to restore its performance. Oil pool lubrication or glycerin lubrication bearings, accidental wear is more, generally to manual scraping method to repair. The more serious wear can be repaired by local welding and scraping.
Jaw crusher bearings are also used rolling bearings, if the cylindrical rolling bearings are damaged, must be more rolling bearings. If the inner ring of the bearing produces microscopic wear, the inner ring of the rolling bearing and the journal can be repaired on the spot by metal brushing technology.
Brush plating technology, parts of the brush plating technology, also known as rapid plating, it is a part of the surface of the local rapid electrochemical deposition of metal in the new technology. Brush plating can repeat the repair of surface wear parts, improve the service life of the parts, and thus reduce the reserve of spare parts. Brush plating can be based on the parts, acid resistance, high temperature resistance and other different conditions, using different brush plating solution, to get different materials of the coating.
The eccentric shaft of the jaw crusher and bearing wear is a relatively common failure problem, wear and tear using the above repair methods, extend the service life of the components, but also reduces the production investment, to a certain extent, to improve the economic benefits of the user, SHANVIM will provide you with more crusher spare parts for effective programs.
The eccentric shaft of the jaw crusher comes from China
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Post time: Oct-31-2024