Three main points of jaw crusher lining plate:  

    1. Selection of lining plate quality: The lining plate should be made of wear-resistant materials. Generally, white cast iron is used for small ones, and high manganese steel is used for large ones.  In order to make the lining plate each force is uniform, often in the lining plate and jaw plate between the pad with plastic liner, such as lead plate, aluminum plate, zinc alloy plate, low carbon steel plate or perfusion cement mortar, to ensure that the lining plate and jaw plate closely combined.
  
      2.lining plate installation attention: because the lining plate surface is usually cast into wave shape or triangle, when the installation of the two lining plate tooth peak and tooth valley just concave and convex opposite, such lining plate on the material not only to squeeze, but also bending and splitting effect, so that the material is easy to break.  The tooth peak Angle of the lining plate is generally 90° ~ 120°, and the rough crushing should use the wavy surface, and the included Angle should be larger.  The size of the pitch depends on the material size, usually close to the crushing size.  The ratio of tooth height and pitch is generally 1/2 to 1/3.  

    3, prevent the wear of the lining plate: because the wear of the lining plate of the jaw crusher is not uniform, usually the lower part of the wear is faster.  Therefore, in order to prolong its service life, the thickness of the fixed plate should be increased. The original thickness of the fixed plate can be increased from 70 mm to 140 mm. After the lining plate is thickened, the included Angle between the jaw crusher mobile plate and the fixed plate is reduced by 2°, the crushing efficiency is increased by 12%, the wear area of the lining plate is increased by 300 LNLN, and the feeding center is 70 mm away from the body.  The center line of the feeding hopper also reduces the wear of the lining plate of the feeding hopper.