Jaw Crusher rear wall

The rear wall, a key load-bearing component in jaw crushers, supports the toggle plate seat and withstands impact forces from the swing jaw via the toggle plate. Constructed from ZG35SiMn/Q355D, it comprises a main wall plate, toggle seat mounting features (recess/boss with bolt arrays), reinforcement ribs, and auxiliary structures (inspection holes, lifting lugs). Manufacturing involves cast steel casting (1500–1540°C pouring) with normalizing+tempering, followed by precision machining (toggle seat flatness ≤0.08 mm/m) and surface coating. Quality control includes MT/UT for defects, mechanical testing (tensile strength ≥550 MPa), and static load trials (1.5× rated load, deformation ≤0.1 mm/m). With a 4–6 year service life, it ensures stable force transmission and crusher rigidity through robust design and strict process control.