Fixed Jaw Plate

The Fixed Jaw Plate is a critical wear component in jaw crushers, mounted on the stationary frame opposite the moving jaw. It forms one side of the crushing chamber where raw materials like rocks, ores, and aggregates are compressed against the moving jaw plate. Its stationary position provides the reaction surface for the oscillating motion of the movable jaw, creating the compressive force needed for size reduction. The plate's geometry, tooth profile, and material composition directly influence crushing efficiency, product gradation, and wear resistance.

Works on the principle of compressive crushing. As the movable jaw plate oscillates toward the fixed jaw plate, material fed into the crushing chamber is trapped and compressed between the two surfaces. The fixed jaw remains stationary, providing a reaction surface that enables the generation of high compressive forces (typically 100-350 MPa) to fracture brittle materials through mechanical stress exceeding their compressive strength.