What are the fixed jaw plate and the moving jaw plate?
2025-03-03
The jaw plates of the jaw crusher are its critical wear-resistant components, typically divided into Fixed Jaw Plate and Moving Jaw Plate During operation, the moving jaw plate performs a复摆 (reciprocating) motion and forms a certain angle with the fixed jaw plate to crush materials. Therefore, the jaw plates are wear-prone components that tend to suffer from abrasion after prolonged use.
Depending on the model of jaw crusher, Fixed Jaw Plate and Moving Jaw Plate There are also various sizes and materials available, including high-manganese steel and ultra-high-manganese steel, which can effectively meet the diverse equipment requirements. The working chamber of the jaw crusher consists of a moving jaw plate and a fixed jaw plate, both of which endure intense crushing forces as well as significant material friction—making them prone to wear and tear. To protect these critical components, wear-resistant liners, also known as crushing plates, are typically installed on the surfaces of the moving and fixed jaws. The surface of the crushing plates is designed with a toothed profile, where the angle of the tooth peaks is usually set between 90° and 120°. This specific angle is adjusted based on the size and characteristics of the material being crushed: larger materials generally require a wider tooth angle, while smaller materials can benefit from a narrower angle. Additionally, the tooth spacing typically matches the width of the discharge opening, and the ratio of tooth height to tooth spacing usually falls within the range of 1/2 to 1/3.
During the operation of the crusher, the upper and lower parts of the crushing plate experience different wear rates—typically, the lower section suffers more severe wear. Since the crushing plate is in direct contact with the material and subjected to intense crushing forces and friction, its service life directly impacts the machine's efficiency and production costs. Therefore, extending the lifespan of the crushing plate is particularly crucial. To enhance the durability of the jaw crusher's crushing plate, improvements can be made in areas such as design, material selection, assembly, and even daily operational practices.
In the production of crushers, Fixed Jaw Plate and Moving Jaw Plate Consumption is significant, making the selection of high-quality materials absolutely essential. In fact, the quality of a crusher—whether good or bad—largely depends on the service life of its jaw plates, while the crusher's outer casing typically doesn't suffer frequent damage.
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Duma Machinery's main products include: mantle and concave liners, crushing walls, and distribution plates for cone crushers; jaw plates, side guards, and pressure bars for jaw crushers; lining plates for ball mills, autogenous mills, and other equipment; impact crusher hammers and impact plates; as well as hammer heads, screen bars, liner blocks, and other wear-resistant alloy steel components for metal shredders.