Old Spring Cone Crusher

The old spring cone crusher, a traditional medium-to-fine crushing equipment, features a spring safety system and operates via a swinging crushing cone interacting with a fixed cone. Its structure includes a cast steel frame, forged main shaft, eccentric sleeve, manganese steel liners, and spring assemblies around the frame for overload protection.​ Manufacturing involves casting key components (frame, eccentric sleeve) from ZG270-500/ZG35CrMo with heat treatment, forging the main shaft from 42CrMo, and machining to tight tolerances. Quality control includes material testing, dimensional checks, and NDT (UT, MPT). Installation requires foundation preparation, component assembly with precise alignment, and tension adjustment of springs.​ Widely used in mining and construction for hard materials, it offers simplicity but lower efficiency compared to modern hydraulic models, with production capacities ranging from 10–200 t/h