Jaw Crusher arm guards

The arm guard (swing arm shield) is a critical safety component in jaw crushers, installed around the swing arm to protect operators and equipment from splashing materials and prevent foreign object entanglement. It consists of a main protective plate (Q235B/Q355 steel), fixing brackets, optional buffer layers, and observation windows, with reinforcing ribs for structural rigidity. Manufacturing involves CNC cutting, forming (bending/pressing), welding, and surface coating (epoxy + polyurethane). Quality control includes material testing, dimensional checks, weld inspection (MT), coating adhesion tests, and installation compatibility verification. With a 1–3 year service life, it ensures safe operation by isolating moving parts and withstanding material impacts.