The Role Of Jaw Plate For Crusher In Material Reduction

The jaw plate for crusher has different designs for different types of crushers.
AGICO provides cement spare parts products in a complete range.
In quarries and mines around the world, crushers play a key role in converting raw materials into finished products for a variety of construction and industrial uses.
However, in this crushing process, a key element hidden inside the crusher is often overlooked, and it is the jaw plate.
This article will take an in-depth look at the critical role of jaws in crusher performance and material reduction.

Why Jaw Plate For Crusher Is So Important

The jaw plates are two flat plates inside the crusher.
They are located near the crusher’s feed port.
Its mission may seem simple: squeeze, crush, and compress raw materials, but there’s complex science behind the process.
Jaws are used to compress, squeeze, blow, or break raw materials into smaller particles, which helps in reducing and preparing the materials into finished products suitable for various applications.
Different types of crushers and jaw plate designs can achieve different crushing effects and finished product particle sizes.

Jaw plates come in different designs for different types of crushers, including hammer crushers, cone crushers, and jaw crushers.
Different types of jaws can affect the crusher’s throughput, maintenance requirements, and finished product particle size.
Therefore, when selecting and operating a crusher, different types of jaws need to be considered to meet specific crushing needs.

  • Jaw Crusher
    Fixed jaw and movable jaw: Jaw crushers usually have two jaws, one is fixed on the crusher frame, called the fixed jaw, and the other is movable, called the movable jaw.
    The movable jaw can swing along a certain trajectory.
    Impact: The jaw plate of the jaw crusher squeezes and breaks the materials into smaller particles through swing motion.
    The angle and gap adjustment of the jaw plate will affect the discharge particle size of the crusher. Smaller gaps and steeper jaw angles generally result in a slimmer finished product.
  • Hammer Crusher
    Hammerhead design and number: Hammer crushers use rotating hammer heads to impact and impact the incoming material.
    Impact: The design, number, and rotation speed of hammerheads will affect the impact force and crushing efficiency.
    More hammerheads usually mean faster crushing speeds, but can also result in a coarser finished product.
  • Cone Crusher
    Cone shape and size: The jaws of a cone crusher are usually conical in shape.
    Impact: The shape and size of the cone will affect the flow and force distribution of materials in the crushing chamber.
    Larger cones are usually used for coarse crushing, while smaller cones are used for medium and fine crushing.
    The rotation speed of the cone also affects the crushing effect.

How To Choose Crusher Jaw Plates Material

The material the jaw is made of is critical to its performance.
Materials such as high manganese steel, alloy steel, tungsten steel, and cast iron can all be used to make jaw plates, and each material has unique characteristics.
It is very important to choose the material suitable for the crusher jaw application because the choice of material will directly affect the performance and life of the jaw plate.

  1. Hardness of Material: First consider the hardness of the raw material you are dealing with.
    For materials with higher hardness, such as granite and limestone, a more wear-resistant jaw plate material is usually required, such as high manganese steel or other alloy steel.
    For softer materials, such as coal and gypsum, relatively soft but elastic materials can be selected.
  2. Crusher Type: Different types of crushers may require different types of jaw materials.
    For example, jaw crushers and hammer crushers generally require more wear-resistant materials, while cone crushers may require materials that are more impact-resistant.
  3. Jaw design: Jaw design also affects material selection.
    Some jaws have special tooth shapes or grooves, which may require a specific type of material to fit the design.
  4. Finished product requirements: Materials need to be selected based on the desired final product quality and granularity.
    Some materials may result in a finer finished product, while other materials may result in a coarser finished product.
  5. Budget: Material selection is also governed by cost factors.
    Some high-performance jaw materials may cost more, while some cheaper materials may not be as wear- or impact-resistant.

Crusher Plate Maintenance

Maintaining the jaws is key to ensuring crusher performance.

  1. Regular inspection and maintenance
    Regularly check the wear of the jaw plate, especially the wear degree of the fixed jaw plate and the movable jaw plate.
    Make sure the gap between the jaws remains within the manufacturer’s recommendations.
    Regularly inspect the jaw plate’s fastening bolts and seals to ensure they remain tight and functioning properly.
  2. Correct adjustment
    Adjust the jaw gap and angle of the crusher according to the hardness of the raw material being processed and the type of jaws.
    Proper jaw adjustment ensures proper particle size and optimal crushing efficiency.
  3. Use proper lubrication
    Make sure the lubrication points on the jaw plates are properly lubricated to reduce friction and wear.
    Use appropriate lubricants to ensure that the jaws and other components are protected during normal operation.
  4. Select the appropriate jaw material
    Select the appropriate jaw material based on the hardness of the raw material being processed and the type of crusher.
    The right materials can provide better wear and impact resistance.
  5. To prevent overloading
    Avoid overloading the crusher as excessive feed may cause excessive wear of the jaws and overloading of the crusher.
  6. Avoid unnecessary shocks
    Avoid placing non-crushing materials (such as metal) into the crusher to prevent damage to the jaw plates.
  7. Regularly replace worn jaw plates
    Once the jaw plate is worn to a certain extent, replace it in time to avoid affecting the crushing efficiency and the life of the jaw plate.
  8. Training operators
    Train operators to ensure they understand how to properly operate and maintain the crusher.
  9. Use preventive maintenance
    Develop a regular preventive maintenance plan, including regular inspection, lubrication, and replacement of worn parts, to ensure the stable operation of the crusher.

There are multiple advantages to choosing AGICO CEMENT’s crusher jaws.
First of all, AGICO CEMENT, as a well-known cement engineering and equipment manufacturer, is known for its high-quality products and good reputation, so its crusher jaws usually undergo strict manufacturing and quality control to ensure stable performance and long life.
Secondly, AGICO CEMENT offers a variety of different types and specifications of jaw plates to meet the needs of different applications and raw materials and even provides customized options.
Our expertise and industry experience also enables us to provide professional advice to help customers choose the jaw plate best suited for their specific application.
In addition, AGICO CEMENT provides excellent after-sales service, including maintenance, replacement parts, and technical support, helping customers maintain the normal operation of the equipment and extend the life of the jaw plate.
Most importantly, our products generally offer reliability and stability, which is crucial for crusher jaws as they are critical components of the crusher.


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