The liner is a key wearing part of the jaw crusher, which directly affects the crushing efficiency, product quality and service life of the equipment. Choosing the right liner and mastering the correct replacement skills can effectively reduce the operation cost and ensure the stable operation of the jaw crusher.
### Liner Selection Principles
1. Adapt to Material Hardness: For high-hardness materials such as granite and basalt, select high-hardness manganese steel liners (Mn13, Mn18), which have strong wear resistance and long service life. For soft materials such as limestone and coal, select ordinary manganese steel liners (Mn10), which are cost-effective.
2. Match Crusher Model: The liner must match the model of the jaw crusher, including the size, shape and installation method, to ensure that the liner can be installed firmly and work normally.
3. Consider Production Requirements: If the production requires a high crushing ratio, select a liner with a deep crushing cavity; if the production requires a large output, select a liner with a wide feeding port and a smooth crushing cavity.
### Replacement Tips
1. Preparation Work: Before replacing the liner, stop the machine and cut off the power supply to ensure safe operation. Clean the crushing cavity and remove the residual materials and debris. Check the installation surface of the liner to ensure that there is no debris and damage.
2. Correct Installation: Install the liner according to the installation instructions, and tighten the bolts to ensure that the liner is firmly fixed. Pay attention to the gap between the liner and the crusher body, which should be uniform to avoid vibration during operation.
3. Post-Installation Inspection: After installing the liner, start the machine for no-load operation for 10-15 minutes, check whether the liner is loose, whether there is abnormal noise, and confirm that the operation is normal before formal production.
4. Liner Maintenance: Regularly check the wear condition of the liner, and turn over the liner for use when one side is worn, which can extend the service life by 40-50%.
Keywords: jaw crusher liner, liner selection, liner replacement, manganese steel liner, crusher wear parts
