XRB BEARING is 4R3042 china bearing manufacturer and factory,we focus on produce Rolling Mill Bearing 4R3042 and Rolling Mill Bearing , 4R3042 bearing inner diameter is 150mm,4R3042 bearing outer diameter is 230mm,4R3042 bearing width is 168mm, 4R3042 bearing are made of high quality chrome steel,each 4R3042 rolling mill bearings must be 100% testing before packing, XRB 4R3042 rolling mill bearing are the same with NSK,NTN,KOYO,SNR,TIMKEN ROLLING MILL BEARING 4R3042,4R3042 bearing are popular size that could be used in many applications,