1.Product Introduction: Large slewing bearings with an outer ring diameter of ≥2000mm, suitable for heavy-duty equipment, capable of bearing high-strength loads and overturning moments, impact-resistant and with a long service life. 2.Structure Type: It has a thick-wall annular shape (wall thickness ≥50mm). The inner and outer rings are integrally forged from 42CrMo steel, with built-in double-row or triple-row rollers, heavy-duty metal seals, and the mounting holes are countersunk (suitable for bolts above M24). 3.Size Range: Outer ring diameter: 2000 - 6000mm, inner ring diameter: 1850 - 5800mm, height: 80 - 200mm. 4.Material: Inner ring /outer ring: 50Mn, 42CrMo; rolling elements: GCr15，GCr15SiMn (optional for impact resistance); seals: nitrile rubber, fluororubber (optional for oil and high temperature resistance). 5.Application Fields: Large port cranes, mining machinery, wind power main units (above 5MW), heavy-duty crawler cranes. 6.Key Inspection Items: Flaw detection of forgings, anti-overturning moment, impurity-proof performance of seals.