jaw crusher side plate

The side plates are key load-bearing components in jaw crushers, connecting the front and rear walls to support the eccentric shaft bearings and withstand lateral forces. Constructed from ZG35CrMo/Q355D, they feature a plate body, bearing housing bores (coaxiality ≤0.05 mm), optional guide chutes, reinforcement ribs, and flange connections. Manufacturing involves cast steel casting (1500–1540°C pouring) with normalizing+tempering, followed by precision machining (Ra ≤1.6 μm for bearing bores) and surface coating. Quality control includes MT/UT for defects, hardness testing (220–260 HBW), and assembly trials ensuring ≤0.05 mm coaxiality. With a 5–8 year service life, they ensure stable crusher operation by maintaining structural rigidity and precise component alignment.