spherical plain bearings: 1.Material:chrome steel Gcr15 or as requirement 2.Size:100-2500mm or as requirement 3.ISO9001-2000 radial spherical plain bearings:1.Material:chrome steel Gcr15 or as requirement2.Size:100-2500mm or as requirement3.ISO9001-2000 certificate,high quality,low price4.OEM service5.The main models we supply are as following :222xx, 223xx, 213xx, 230xx, 231xx, 232xx, 239xx, ...