How do the moving and fixed jaw plates work together to crush materials?
2025-04-28
The jaw crusher, a critical piece of equipment in the coarse crushing stage of materials, is widely used in industries such as mining and construction. Its core working principle relies on the coordinated action of a moving jaw plate (also known as the movable jaw liner) and a fixed jaw plate (or stationary jaw liner), which crushes materials by squeezing them within a V-shaped crushing chamber formed by the two high-manganese steel jaw plates.
Core Component Analysis
●Fixed and Moving Jaw Plates: These include the fixed jaw plate (mounted on the frame) and the moving jaw plate (connected to the drive mechanism), both made from high-manganese steel and designed to be easily replaced for compatibility with various materials.
● Jaw Crusher Side Guard Plate: A wear-resistant component located on the inner side of the frame, protecting the equipment from impact and abrasion caused by material flow.
● Wedge System: Some models use a wedge mechanism to securely hold the fixed and moving jaw plates in place, ensuring stability—and allowing for easy replacement once wear occurs.
Key Parameters
● Bite angle: Refers to the angle between the two high-manganese steel jaw plates, directly influencing crushing efficiency and overload protection capability.
● Open-Side Setting (OSS): The maximum gap when the fixed and moving plates of the jaw crusher are stationary, determining the initial crushing particle size.
● Edge Closure Setting (CSS): Achieved through the combined control of OSS and stroke.
Jaw Mold Selection Guide
Select the jaw crusher fixed and moving plate tooth profile based on material characteristics (such as hardness, particle size):
Super Teeth: Ideal for high-hardness rocks (such as granite).
Stone-picking teeth: Versatile design that balances crushing efficiency with wear resistance.
Multi-tooth design: Specifically designed for recycling lightweight materials (such as construction waste).
Application Scenarios
From river pebbles to asphalt recycling, the diversified design of the鄂破 fixed and moving plates enables the equipment to handle various operating conditions, while the protective function of the jaw crusher side guards further extends the overall machine's lifespan.
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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.