Issues That Need to Be Paid Attention to When Replacing the Crusher Liner.

Replacing the crusher liner is a key part of equipment maintenance, and it is necessary to focus on the balance of safety, precision and efficiency. Before operation, it is necessary to ensure that the equipment is completely powered off and a warning sign is hung to avoid accidents caused by misstarting. At the same time, the residual materials in the crushing chamber must be cleaned to prevent the fragments from falling and causing harm to personnel. Operators should wear goggles, dust masks and anti-smashing equipment.

During the replacement process, the matching of the new and old liners must be strictly checked to confirm that the model and size are completely consistent with the equipment model to avoid abnormal gaps after installation due to tolerance accumulation. During installation, the principle of symmetrical fastening should be followed, and the bolts should be tightened step by step in diagonal order to prevent stress concentration from causing deformation or breakage of the liner. Pay special attention to the cleanliness of the contact surface between the liner and the machine body. Residual slag or oil may affect the fit and shorten the service life.

When disassembling the old liner, the main structure of the crusher must be checked simultaneously, especially the wear of the fixings such as the pressure plate and wedge block. If cracks or deformation are found, they must be dealt with in time. After installation, the running smoothness needs to be tested manually to confirm that there is no abnormal friction between the liner and the rotor. During the first no-load operation phase, the vibration and noise indicators should be closely monitored. After the load operation, the bolts should be re-tightened within 4-8 hours to eliminate the risk of loosening caused by thermal expansion. A complete replacement record should be established throughout the process to provide a basis for the subsequent maintenance cycle adjustment, ultimately achieving dual guarantees of safety and economy.