... all types of excavators Slew bearing for Single-row ball(HS Series)1. Id:320-4500 Od:550-4500mm 2.material: 52Mn ... 4.ISO9001-2000 certificate 5.R&D capacity6.Tolerance:ABEC-1 standard7.Basic loading rating:Dynamic & Static depend on different modelThe ... , D60, D5D, D6D, D75, D80 (D85)2) Hitachi: EX100, EX200-1-2-3, EX3003) Cat: E110B, E200B (E320), E240 (MS180), E300B ...