1.Material: GCr15 2.Brand:SJQ 3.Standard:ISO 9001:2008 4.Service:OEM ... ball bearings (618 series ,619 series,60,61....64 series)2.Thrust Roller Bearings3.Cylindrical Roller Bearings4.Thrust Needle Roller 5 ... bearing,thrust tapered roller bearing,spherical thrust roller bearing,clutch bearing,etc.2 retainer:cooper,nylon,bakelite,stainless.3 quality:ISO9000,bearing ...