The fixed lining plate (tooth plate), movable jaw lining plate (tooth plate), and both side lining plates (guard plates) of the jaw crusher are easy to wear. After severe wear, the product granularity becomes larger.
In the initial stage of wear, the tooth plate can be turned around, or the upper and lower parts can be turned around. The wear of the jaw plate is mostly in the middle and lower part. When the tooth height is worn down by 3/5, a new liner needs to be replaced. When the liners on both sides wear out by 2/5, new liners need to be replaced.