Four Row Tapered Roller Bearing 38000 series 1.Product Introduction: Its load - bearing capacity is 3.5 - 4 times that of single - row bearings, suitable for extremely heavy loads. 2.Structure Type: The inner ring / outer ring is integrally forged, with four - row rollers + cage, multiple spacer rings, and a metal seal. 3.Size Range: Inner diameter 100 - 2000mm, outer diameter 200 - 3000mm, width 80 - 500mm. 4.Material: Inner ring/Outer ring/Rollers: GCr15/GCr15SiMn/20Cr2Ni4A, cage: stamped steel / brass. 5.Precision: P0,P6,P5. 6.Application Fields: Large - scale rolling mill roll necks, port super - heavy cranes, mining machinery spindles. 7.Key Inspection Items: Forging flaw detection, consistency of four - row rollers, radial load - bearing capacity (≥10000kN). https://www.atlycbearing.com/four-row-tapered-roller-bearing/four-row-tapered-roller-bearing-38000-series