Jaw crusher is widely used in mine, metallurgy, high way, railway and water conservancy industries, the compression strength of jaw crusher is not exceed 320 Mpa when jaw crusher designed by the specialist.

Jaw crusher wear phenomena in daily operations is inevitable, we have to do regular jaw crusher maintenance to extend the useful life to the maximum, so we should proceed long-term maintenance for jaw crusher mandrel, eccentric shaft and bearing bush areas.

Firstly, if the shaft attrition is very little, we can proceed turning on turning-lathe to repair it geometry, The journal to achieve the correct geometry, then correspondingly decrease of the bearing bore diametre. But after several such treatment, if the journal size reduction of 5% over the original, it does not allow re-turning, while the shaft should be replaced with new.

Secondly, Jaw crusher work under impact load, the working life of babbitt lining on bearing bush is about two years, once exceed the deadline, you will need to re-casting. If the gap between eccentric shaft and bearing bush, mandrel and bearing bush is 1.5 times greater than the original, need to add pad to adjust or replace. If oil groove wear 1.5 mm, should be reopened and adjusted oil groove. For the processed bearing bush need to accord with the following requirements: babbitt surface color to be uniform, matt, silver white; should not have ash, cracks, sand hole, shrinkage and other husking phenomena.

For more details, you can contact us online or send email to sales@kefidinc.com now.