Cone Crusher head ball

The cone crusher head ball, a critical pivot component atop the moving cone, supports axial crushing loads (tens of thousands of kN), guides eccentric rotation (5–20 mm amplitude), reduces wear, and maintains alignment between the moving cone and concave.​ Structurally, it features a hemispherical/spherical head (radius 50–300 mm) of GCr15/42CrMo with a 2–5 mm hardened layer (HRC 58–62), a shaft neck, transition fillet (radius 10–30 mm), and lubrication groove.​ Manufactured via closed-die forging (1100–1200°C) or investment casting, it undergoes quenching/tempering (core HRC 25–35) and induction hardening. Precision machining (CNC grinding) achieves Ra0.1–0.4 μm surface roughness and ≤0.01 mm spherical tolerance.​ Quality control includes material spectrometry, hardness testing, UT/MPT for defects, and fatigue testing (10⁶ cycles). It ensures reliable performance in mining/aggregate processing with compressive strength ≥2000 MPa and minimal wear (≤0.1 mg loss/10⁴ cycles).