... have 10 years of experience and history in bearing component industry.TAPER ROLLER BEARING SERIES:TAPER ROLLER BEARING PARAMETER:TAPER ROLLER BEARING FEATURE:Specifications:1.Reliable quality,all goods same ... , such as SRL ,PS2, Alvania R12 and so on SeriesSeries 30200, 30300, 32200, 32300, 33000, etc. Ring MaterialChrome Steel ,Carbon steel ...