Bearing manufacturer: 1)ID:100-3000mm 2) High precision,long life 3) ... Bearings ,Three-row cylindrical roller combination slewing bearing . ID Size100-4000mmCage MaterialSteel ,BrassPrecisionP0,P4,P5,P6Quality StandardISO9001:2000ServiceOEM ... packageMarketEurope,America,Middle East,Asia,etc Single-row-4-point Contact Ball Slewing Bearings (external-gear type)DesignationsBoundary dimensions(mm ...