Cone Crusher Lower Frame

The cone crusher lower frame, a foundational structural component, supports the entire assembly, distributes loads to the foundation, houses critical parts (thrust bearing, main shaft socket), and protects against contamination. It demands high rigidity and strength.​ Structurally, it includes a cast steel/ductile iron body (500kg–5 tons) with reinforcing ribs, thrust bearing seat, main shaft socket mount, lubrication/cooling channels, foundation flange, access ports, and sealing surfaces.​ Manufacturing involves sand casting (material selection, pattern making, molding, melting/pouring) with heat treatment, followed by machining (rough and precision) and surface treatment.​ Quality control covers material testing, dimensional checks (CMM, laser scanning), structural integrity testing (UT, MPT), mechanical performance tests, and assembly validation, ensuring it meets strength and precision requirements for reliable heavy-duty operation.