... ,p23.Rich stock guarantee4.Ten years industry experience Specification of Taper roller bearings : ItemSpecificationsModelAll 30 seriesMaterialChrome Steel or Stainless steel 304/306Bore size25 ... 33200 series, non-standard series.TypeSingle-row taper roller bearing, Double-row taper roller bearing, Four-row taper roller bearing, auto bearing, Machine-tool bearing, Construction ...